the stage of the project cost management
Abstract：Project cost management is the basic contents to determine reasonable and effective control of the project cost. Described the current stage of the project cost management situation on the strengthening of the various stages of construction cost management of the importance of and raised a number of key initiatives.
Keywords：project cost；the current stage of the project；project cost management；
Even under the WTO and China's accession to the world community，China's construction industry how to effectively control construction cost of the construction and management of an important component part. However，the current budget for the construction projects - estimate，budget，Super budget accounts for the "super three" is still widespread and that eventually led to a serious loss of control of project investment. Project cost management is the basic contents to determine reasonable and effective control of the project cost.
As the project cost to the project runs through the entire process，stage by stage can be divided into Investment Decision stage，the design and implementation phases. The so-called Project Cost effective control is the optimization of the construction plans and design programs on the basis of in the building process at all stages，use of certain methods and measures to reduce the cost of the projects have a reasonable control on the scope and cost of the approved limits.
Engineering and cost management work of the current status of project cost management system was formed in the 1950s，1980s perfect together. Performance of the country and directly involved in the management of economic activities. Provisions in the design stage to different estimates or budget preparation as well as government; Nothing relevant departments to formulate a budget，content，methods and approval，the budget will provide the fixed cost of equipment and materials and fixed price of the budget preparation，approval，management authority，and so on.
With the historical process，after recovery，reform and development，formed a relatively complete budget estimate of quota management system. However，as the socialist market economic development，the system's many problems have also exposed. Generally speaking，the budget estimate is based on direct participation in the management of national economic activity as a precondition. Enterprise is not the actual economic entities. Due to the characteristics of the planned economy，and，at the time under the conditions of productivity，will inevitably become a shortage in the economy.
In severe shortage of commodities under the conditions，as long as a certain level of investment，will be certain outputs. In this environment，the project planning and technical argumentation there can be no economic analysis. State control of the project cost constitute key factors equipment and materials prices，wages and taxes of artificial distribution. In this relatively stable economic environment，the budget estimate for the system approved project cost，help the government to carry out investment plans to play a major role.
As the socialist market economic system established，requires us to predict project investment and control. In recent years，international investment project developed to the requirements of prior pre-control and in the middle of control. China，the traditional practice in an objective light on
the cause decision-making，implementation heavy，light the economy and technology，
First，the consequences of victimization，Due to the technical personnel of the project technical and economic concepts and a weak awareness of cost control，cost management makes the quality difficult to raise. Project Cost control is difficult to achieve long-term goals.
Second，the various stages of the project management view of the above circumstances，My first academia in the 1980s made the whole process of cost management and control concept，building departments will study the feasibility of projects and the budgets and final accounts to two extended at the request of the corresponding regulations put our cost management concepts and methods referred to a new height.
Our task now is to be modern and cost management in line with China's national conditions of the market economy system goal，learn from the advanced experience of the developed countries，and establish sound market economic laws of project cost management system，efforts to increase the project cost levels. An investment decision-making phase of the project cost management construction project investment decision-making stage is proposed project proposals; conduct a feasibility study to determine investment estimation and the final preparation of design task. At this stage，the project's technical and economic decision-making，of the construction project cost of the project after the completion of the economic benefits have a decisive influence，The construction cost is an important stage control.
China's current stage of the project cost for the project management for the purpose of clearing price，and focusing only on the construction process of cost control，neglected before the start of the project investment decision-making stage of cost control. Investment decision-making phase of investment projects is estimated an important basis for decision-making. It
has a direct impact on national economic and financial analysis of the results of the reliability and accuracy. Because of this phase is the preliminary work of projects，the information cannot be fully，comparable works more or less that information accumulated relatively small，estimated inadequate and unscientific. Makes project cost management and cost workers is difficult at this stage do something.
The various stages of the project cost control in the decision-making phase project cost control. Right project planning phase of the cost，many owners have the wrong understanding that the lower the cost the better. Cost control is not a unilateral issue，and should be a number of factors，a combination of practical，comprehensive consideration. The construction project investment decision-making stage，the project's technical and economic decision-making，Cost of the project after the completion of the project and the economic benefits，with a decisive role in project cost control is an important stage，rationally define and control the direction of the project cost of accurate positioning and building Optimization guiding role.
In the decision-making phase of the most important is to do a good job feasibility study，the work is done well，returns on investment and can form a good proportion. Otherwise，invest more，less effective，resulting in loss of control and waste of investment.
At present，some of the projects planned the owners of departure from the subjective desires of a feasibility study on the lack of scientific proof. Feasibility Study untrue，false or engineering functions obtaining the approval of their superiors，actually put into the feasibility study will be awarded in the study for the project after the smooth functioning buried a lot of hidden problems，lead to insufficient follow-up funds for the project and
had to extend the time limit so that the project could not have planned the use of cost-effective，even become hopeless completion of the beard works.
Therefore，in order to phase in the investment decision-making effectively control construction costs，we must do the following aspects: Implementationof the construction project and corporate accountability，Construction of the project from planning to implementation of the entire process and the use of the funds to repay responsibilities to the people. in addition to establishing a legal system and the project supervision matching mechanism by the departments in charge of the industry and supervision departments for setting up a monitoring group to oversee the use of funds.
A realistic approach to market analysis，to avoid the blindness of the project decision-making，reduces and reduces investment risk. Fully consider building projects in the future market competitiveness，design task more scientific and reliability.
Capital financing must have a formal commitment document，the parties must do investment funds in place，and funds must have documents to ensure that the project can be approved after the scheduled implementation. To the various loan conditions should be carefully analyzed to minimize the burden of interest and repayment pressure.
To strengthen the engineering geology，hydrology，geology and land，water，electricity，transport，environmental projects such as external conditions for the work of depth to make the investment estimate there are sufficient grounds.
Taking extensive investigation and research，comparison of similar projects，seriously functional analysis，multi-program comparison and choice. After full technical appraisal and economic evaluation，and the final technologically advanced，functional and reliable. Reasonable economic projects，thus calculate a more accurate and realistic estimation of the
amount of investment，so that the project cost from the start positioning in a more reasonable level.
The design phase of the project cost control for a long time，China's building control very effective，- investment projects is not uncommon，this will affect owners of investment returns，it adds to the owners and within budget，as well as difficulties in fund owners，the impact on the future management or the owners make payments in arrears，and so on. Hence，the control of the project cost is of great significance，however the project cost is the primary means of control design，
Currently most of the property owners in the design stage seldom works on cost control，and they found that the cost of the design will not have a great impact，it is wrong，on the contrary，Design phase of the project cost control is the most important step. Because it determines engineering design，construction methods，materials and equipment types，models of the project cost is of critical significance，design optimization phase of the program or minor changes，project cost will have a significant impact，Design phase of the project cost control of the total project cost of 70%. Following is how to control the project from design to create the Law: As the owners must design，the design selected on the quality level is a direct impact on the quality of product design level，and the design quality products in the level of direct influence on the pricing of the works. Different design units on the same project design are different. the same item of different design institute works between certain aspects of the project cost on the existence of differences between，We assume that with a design from two different design institute to design，Construction plans after the completion of a requested advisory unit cost to do the budget，certainly different design institute the total cost of the project is absolutely not the same，and most of the difference between the two over 10% even more than
30%，and not necessarily high cost than the design of low cost，and good design is often low cost，We all know that different people have different design styles and different levels，the design works naturally，therefore chosen to design units is the control on the first step. Through tender to select the design of the units is a good method，the tender documents to elaborate on this particular aspect of the requirements，cost control targets，and so on.
Otherwise，in the subsequent design process design units will put an increase in the cost of the design requirements; through tendering the project design into the market，compared to select the best design units.
Promoting the design bidding and design optimization campaign mode design units assessed by experts using scientific group France，in accordance with applicable，economic，aesthetic principles and advanced technology，reasonable structure to meet building energy efficiency and environmental requirements，comprehensive assessment of the merits of the program design，selection of the best determination of the successful program.
Successful investment program estimated to be close to the general construction project scope of investment. This means two design contracts will help design the program of choice and competition to ensure that the selected design advanced technology，unique novelty，adaptability，as well as to control the cost of the project. Design units should strive to improve their quality of the project design clever idea，contemporary reducing the project cost on to rack their brains to improve design quality，strive to put the design phase of the project cost control approval of the investment ceiling.
Strengthening the design stage of the design phase to strengthen supervision of the Commissioner to determine a reasonable design，mature
technology，reduction in the construction phase major design changes and changes in the program，in the effective control of the project cost will play a role. 1 to the design of the project if the project supervision to get involved，excluding unfavorable factors may generally is excluded from the 80% errors. In the entire process of building cost control，construction began at best to save and invest 20%，the key lies in the construction phase of the identification and control costs. Supervision of the design phase include : Design Institute under the design drawings and notes help owners deal with different design options for the economy，capital expenditure to develop the preliminary estimates，to ensure that the investment can be most effectively utilized. With the owners of the Commissioner include:
According to the Design Institute to provide design drawings and notes to help owners deal with different design options for the economy，capital expenditures to develop the preliminary plan to ensure that investment can be most effectively used; with the owners of different design options，the need to calculate their own materials and equipment to conduct a cost analysis and study，to the design staff costs，to assist them in the investment limit within limits designed to save and invest. To seek a one-time small investment and economic good design program made the most rational economic indicators.
Design actively promote the so-called cap limit design，even with the approval of the design task and investment estimates，guarantee the functional requirements of the premise. The preliminary design and control budget，according to the preliminary approval of the total budget for the design and construction design control. Limits，and every one professional，each of whom have a design threshold of a target. In the design process，designers should progress to more programs，design optimization，ensuring that the design is technically advanced and reasonable，innovative，stylish，and do not break the limit investment objectives，thus eliminating the
engineering design raise the factor of safety and design standards，or only consider the technical feasibility of the program，rather than economic rationality phenomenon，the project cost to ensure effective control.
Also known as the value of value engineering analysis，is a modern scientific management technique，is a new techno-economic analysis，is the product of functional analysis to conserve resources and reduce the cost of the purpose of an effective method. It made up for the traditional cost management simply focus on cost reduction and quality management only emphasizes improving the quality deficiencies，construction is conducive to resolving the long-standing long period，a lot of wastage，poor quality，high-cost problems. Value Engineering laws generally divided into three steps: assessment of the design of object technology and economic Score; Calculation of the target group of technical and economic indicators; calculate the geometric design of the object，on average; From comparison choose the best design.
Construction phase of the project implementation unit construction cost management to control the cost of the project is reasonable in the project to meet quality standards premise，in the investment decision-making stage，the design phase and construction phase of the project put the project approval occurred in the control limits，strive in various construction projects rational use of human，material and financial resources to achieve good investment returns and social benefits.
The project cost control and management is a dynamic process. The dynamic market economy，to make the investment in the identification and control become more complex，this will require the construction units to the management of project cost to the project runs through the entire process，it is necessary to have a comprehensive focus. The implementation phase of the projects. The implementation phase of the project cost management is the
implementation of the entire process of project management. Project implementation phase of the project cost management can be divided into three parts: the tender management，construction management and settlement management.
Bidding for the construction phase of the construction units Bidding system control engineering cost effective means，bid organization can improve the cost-effectiveness of construction projects and ensure the quality of construction projects，shortening the construction cycle return on the investment，construction units can take full advantage of bidding for the effective means of cost control.
Construction No. 10 on the 7th ministerial decree issued a "contract with the Construction Contract Pricing Management." clearly pointed out in bidding for projects using inventories. This requires the building of units conducting the tender exercise，in the tender document to include not only the usual content，like tender notes before schedule，tender notes，the conditions of the contract，the contract terms of the agreement，contract format，technical specifications，drawings，tender documents and other reference format，it is also necessary to provide the engineering inventory，Bidding as a reference document of the important components.
Construction units in the tender document for the project inventory，in accordance with state or local rules promulgated by the calculation that the reunification of the divided projects，unified measurement units and the reunification of the engineering calculation rules，according to design drawings to be calculated and statistical arranged，obtain the list. Quantities to be followed in the preparation of an objective，impartial，scientific，and rational principle. Compilers must have strong manly budget，and should have certain knowledge of the engineering design and construction experience，and the material and mechanical construction technology for
comprehensive scientific knowledge，in order to calculate the volume of the works without heavy missed. The basis of which must be in accordance with state regulations engineering calculation rules，and the sub-projects division engineering units，and in accordance with design drawings，design essential Love tender documentation requirements are calculated.
Quantities of the project should have a testing general，the entries must be simple，while not appear Lousing wrong items Pricing should guarantee the correctness of the project. Should the requirements of the different grades separate engineering division，the situation was different; We may have different prices for the items separately. This requires the preparation of the list compilers，seriously study design drawings，Analysis of the tender documents include the elements of the work and the different technical requirements，all familiar with the process，and to the scene of serious investigation，is forecast to make possible the construction of the case，right will have an impact on the Price of projects to be broken down. In addition，because the project inventories to calculate the amount of the
project is not complete engineering and consider the interests of the construction units，the quantity list by the number of actual construction is a practical terms.
In the evaluation and review of the tender offer should do the units total individual Price quotations and the comprehensive assessment. Price does not meet the requirements of individual shows Price meets the requirements，and the lowest total Price could not explain the single lowest bidder. Bidders often know the total cost to maintain the same circumstances; the project is likely to change smaller projects to lower the price.
Changes may be larger projects price increases to achieve the completion of clearing works will be added for the purpose. We would also do price and the corresponding quantity of comprehensive engineering
assessment of the large volume of projects to focus on the price analysis. Price will do with the contents of the work，construction program，a comprehensive technical evaluation process，thereby preferred choice of a construction unit. Construction of the construction phase of the contract cost control basis. Signed tight construction contract，while strengthening the construction contract management can guarantee that the contract price is reasonable，legitimacy and reduce the performance of the contract A，B in disputes and safeguard the interests of both the contract，effective control of the works investment costs.
After the signing of the contract，to do the management contract documentation，contract and the supplementary contract agreement until the regular meeting site in minutes. Work contacts such as a single content of a contract extension and explained that the integrity must be preserved，in addition to establishing a technical files，Implementation of the contract for dynamic analysis，results of the analysis to take proactive measures.
Construction phase in the construction phase construction plan is based on the budget or Ken works contract price of the target，Ken control the cost of the project. At this stage of conservation has room for a small，but the possibility of waste is great. Thereby to control the cost of the project to give sufficient attention.
Construction program to strengthen the comparative technical and economic construction program is construction design of a re - to the contents of the work，a reasonable construction plan，shorten the construction period and ensure the quality of the project，improving economic efficiency，Construction of the program right from the technical and economic evaluation were compared，through qualitative and quantitative analysis，the quality，time，Cost three technical and economic indicators，be rational，and effective use of manpower，material and financial resources，
achieve better economic efficiency，good construction management relations，a comprehensive cost management is an important way.
Strictly related changes to the project budget control in the proposed budget. Construction of the changes caused by many reasons，including works poorly designed，so that the engineering contract with the drawings provided inconsistent; The current market supply of materials does not meet the standard specifications of the design requirements. These issues have to leave breadwinner project cost factors. Therefore，in the construction process，we must tighten customs change，through no design changes to expand the scale and improve the design standards; increase the construction and contents，the best implementation of the "grade control，visa quota" system. Right to change the design，particularly as it relates to the cost of the design changes must be approved by the design units，construction units scene representatives，supervision engineers common signature，and should be ahead of this type of change，reduce losses，because it has been completed or partially completed project will entail the demolition of the contents，it is bound to cause major changes to the loss. Therefore，the construction units should be assigned to the project cost management professionals Permanent construction site，to grasp at any time. Control project cost of the changes.
Works on the scene visa formalities through strict control of the construction project supervision system，the establishment of specialized departments，Professional use of the professional management of projects and to avoid project management personnel just visas，not economic account of the phenomenon. Investment out of control caused serious consequences. To serious change visa procedures to be taken to the building，Supervisor，the construction site together representatives signed the way to
ensure that change，visa authenticity，legitimacy，economic and avoid fraud and the resulting phenomena arising from the dispute.
In the course of construction，the construction units to enhance on-site construction management，supervision and construction side according to the drawings，and strictly control the change of the negotiations，materials substitution，the scene visas，and various additional extra budgetary labor costs for the necessary changes should be done first afterwards，after money，Change event on the timely change in the calculation of the workload and the cost of change occurred to grasp at any time cost of the project level，things to avoid a backlog of work that the true cost of the project.
Construction unit representatives to the scene to supervise doing a good job record，particularly concealed records and visas，reduce clearing the passing phenomenon. Many works visa scene is not as serious，works to bring a very large settlement of the trouble，lead to considerable economic losses，the scene strict visa management of the construction phase of the project cost control key.
Of project list rigorous review of the project on the review of inventories，Engineers’ monitor list of measures to control the project. BOQ to provide the list of measures is to complete construction projects，occurred in the pre-construction engineering and construction process technology，life and safety aspects of non-engineering projects entities. At this stage because many projects are in construction plans and the construction site of the imperfections on the tender wait until the construction tender of the project design and actual scene have better access. Management Engineer addresses the gathering first-hand information on the original，itemized checking identification，inconsistent make revisions.
Control material consumption，rationally define material prices. Cost of the project control materials price control is the main，the cost of materials in engineering often holds substantial proportion，usually accounts for the estimated costs of 70%，representing the direct costs of 80%. It is necessary in the construction phase in strict accordance with the contract amount of material control; material set reasonable prices，so as to effectively control the cost of the project. Market economy material supply a variety of channels，variety and price range materials，construction unit budget management and field personnel should pay close attention to market rates，with the progress of the scene，the market，hand in the construction of the information and materials for the completion of the accounts provide a strong basis.
Technology and economic integration，strengthening investment control. Effective control of the investment，from organizational，technical，economic，contracts，and other measures. Therefore，the construction units must strengthen management，engineering and technical personnel of the "economy" concept，the quality of education，Training pragmatic working style，the construction side to help improve construction design，reasonable security，financial，and material resources. Accelerate the pace of work to improve the quality of the projects. Construction should encounter problems in a timely manner with the designer linked to choose both economic and scientific potential solutions，overcome the waste caused by command，to give due attention to the importance of investment in conservation，is responsible for the engineering technician with the combination of economic officers from the tender，contract negotiations，costing the budget，signed paid to the progress of the completion of the accounts，a cost analysis，the whole process management and strictly control the cost of the project.
Do a good job clearing price completion of the assessment project is the completion of settlement construction enterprises in accordance with the provisions of the contract internal completed by the contractor，experience resumption quality standards and comply with contract requirements，to the building of units of the final settlement price of the project. After the completion of the audit settlement is approved construction project cost basis. Clearing the completion phase project cost control. For a long time，the completion of construction drawings-clearing budget is the cost management problems to be solved. Therefore，the completion of the audit settlement is a very important task，should focus on accomplishing the following aspects: To audit the accuracy of output. The project is the completion of audit settlement audit，the most important and most complex，one of the most meticulous work，must plan to the completion of the project，design changes and construction site as the basis，fixed in strict accordance with the provisions of engineering calculation rules itemized audit，to prevent the construction of the project completed clearing inflated output to increase the cost of the project.
Review of fixed quote is correct. Review included a breakdown of the price with a fixed price in line，their names，specifications，Measurement units and the contents contained units with the valuation; for the price of conversion，First review of whether the conversion price is fixed allowed，followed by review of the conversion price is correct.
Review fee standards with fixed costs during the construction and engineering cost of the policy.
1985 summary，project cost control is a whole process of control，it should be said that every link is no room for complacency，and each one links are also important. With China's entry into the WTO，China was the main investment diversification，investment side of cost reduction，cost
control，improves returns on investment increasing attention. Therefore，changes to the original construction cost estimate，budget，budget，contract prices，and the settlement price accounts for the completion of the move. Lack of continuity of the situation，the launch control system investment projects，investment in construction projects to improve the level of control. Can promote the country's socialist market economic development，adapt to the global economic integration process.
工程造价管理浅论
摘要：工程造价管理的基本内容:合理和有效控制工程造价。描述
现阶段的工程造价管理的情况,加强了各阶段的工程造价管理工作
的重要性,并提出了若干关键性举措。
关键词：建设成本；建设工程项目；工程造价管理；
前言
中国加入世贸组织的世界大家庭, 是中国建筑业如何有效地控制工程造价的建设和管理的一个重要组成部分。然而，目前建设项目年度预算为-概算\预算，超预算的"三超"现象仍然普遍存在，最终导致了项目投资严重失控。工程造价管理的基本内容，就是合理确定和有效控制工程造价。
工程项目的费用，贯穿整个项目过程中，按阶段可分为：投资决策阶段，设计和实施阶段。所谓工程造价的有效控制，就是在优化建设方案，设计方案的基础上，在建设过程的所有阶段，使用某些方法和措施，以降低工程成本，实现一个合理控制的范围和成本的核定限额。
工程造价管理制度形成于50年代， 80年代成熟起来，表现为国家直接参与经济管理活动。规定在设计阶段，以不同的概算或预算的编制以及政府有关部门制订财政预算案、内容、方法和审批，这份预算案将提供固定费用、设备和材料，采用固定价格的形式预算编制、审批、管理权限等等。
随着历史进程经过恢复、改革和发展，形成了比较完备的概预算定额管理制度。但是，随着社会主义市场经济的发展，制度的许多问题也暴露出来。一般来说，预算是基于直接参与管理国家的经济活动作为先
决条件，企业并不是实际的经济实体，由于计划经济体制的特征，在当时的条件下，生产力必将成为短缺经济。严重的商品短缺的情况下，有一定程度的投资将有产品产出。在这种环境下，项目的规划和技术论证就不可能有经济分析。由国家控制项目成本的构成要素-设备和材料价格。在这种相对稳定的经济环境，利用财政预算的制度，核定工程造价，帮助政府进行投资计划方面发挥了重大作用。
随着社会主义市场经济体制的确立，要求我们预测项目的投资并控制。近年来，国际投资项目的发展要求，事前预控，事中控制。而中国传统的做法，是客观的角度对事业决策，重执行，轻经济。
首先，由于技术人员的工程技术和经济观念和意识淡薄，成本控制，成本管理，使质量难以提高。工程造价控制是很难达到的长远目标。
第二，各个阶段的项目管理鉴于上述情况，我国在八十年代提出了全过程的成本管理与控制的概念，建设部门将进行可行性研究和项目的预算和决算等，以扩大两方请求的相应规定，我们把成本管理的观念和方法提到了一个新高度。
我们现在的任务是要现代成本管理符合中国国情的市场经济的系统目标，借鉴先进发达国家的经验，建立健全市场经济规律的工程造价管理体系，努力提高工程造价的水平。
投资决策阶段的工程造价管理，建设项目投资决策阶段是提出项目建议书，进行可行性研究，确定投资估算，最终编制设计任务。在这个阶段，项目的技术和经济决策，对建设项目工程造价的工程完成后的经济效益有着决定性的影响，建造成本是一个重要的阶段控制。
我国现阶段的工程造价进行的项目管理的目的是控制造价，注重施工过程的成本控制，忽略项目开始投资决策阶段的成本控制。投资决策阶段的投资项目，预算是一个重要的决策依据。它直接影响到国民经济及财务分析结果的可靠性和准确性。因为这个阶段是工程的前期工作，信息不完全，相同或相近工程积累的资料比较少，估计不够全面，不科学。使工程造价管理成本在现阶段很难有所作为。
在决策阶段的工程造价控制。项目规划阶段的成本，许多业主有错误的理解，认为成本最低，最好。控制成本，不是单方面问题，而应该是一个多因素的影响，应结合实际，全面考虑。建设项目的投资决策阶段，项目的技术和经济决策，对工程造价后期工程的经济效益，有决定性作用。决策阶段是项目成本控制的一个重要的阶段，合理确定和控制方向的工程造价准确定位和建立优化的指导作用。
在决策阶段最重要的是做好可行性研究。这项工作做得好，投资回报率，能够形成一个良好的比例。否则，投资多，收效不大，导致投资失控和投资浪费。
目前，一些项目的策划，从主观愿望的可行性研究方面，缺乏科学论证。可行性研究报告不真实，虚假或工程职能未经付诸实际，可行性研究在研究项目批出后，显现不少隐患，结果导致没有足够的后续资金支持项目，并延长时限，使该项目没有达到计划的使用效益，甚至成为竣工无望的工程。
因此，如要在投资决策中有效地控制工程造价，必须做好以下几方面的工作：
1）实施建设项目法人责任制，工程应从规划到执行的整个过程和资金偿还的使用上责任落实到人。除了要确立法律制度和工程监理配套机制，还应由相关主管部门组织工商及监管部门成立监察小组，负责监督资金的使用。
2）以实事求是的态度进行市场分析，以避免盲目性，对项目决策，减少和降低投资风险。充分考虑建设项目在未来的市场竞争力，保证设计任务科学性和可靠性。
3）资金必须有正式的承诺文件，各方必须做到到位资金必须有文件，以确保可以批准立项后，按原定执行。对各项贷款的条件应仔细分析，以减少利息负担和还款压力。
4）加强工程地质、水文地质、土地、水、电力、交通、环保工程等外部条件的工作深度，使投资估算有充分的理由。
中英文资料对照外文翻译 机械设计 摘要： 机器由机械和其他元件组成的用来转换和传输能量的装置。比如：发动机、涡轮机、车、起重机、印刷机、洗衣机和摄影机。许多机械方面设计的原则和方法也同样适用于非机械方面。术语中的“构造设计”的含义比“机械设计”更加广泛，构造设计包括机械设计。在进行运动分析和结构设计时要把产品的维护和外形也考虑在机械设计中。在机械工程领域中，以及其它工程领域，都需要机械设备，比如：开关、凸轮、阀门、船舶以及搅拌机等。 关键词：设计流程设计规则机械设计 设计流程 设计开始之前就要想到机器的实用性，现有的机器需要在耐用性、效率、重量、速度，或者成本上得到改善。新的机器必需能够完全或部分代替以前人的功能，比如计算、装配、维修。 在设计的初级阶段，应该充分发挥设计人员的创意，不要受到任何约束。即使有一些不切实际的想法，也可以在设计的早期，即在绘制图纸之前被改正掉。只有这样，才不致于阻断创新的思路。通常,必须提出几套设计方案,然后进行比较。很有可能在这个计划最后指定使用某些不在计划方案内的一些想法的计划。 一般当产品的外型和组件的尺寸特点已经显现出来的时候，就可以进行全面的设计和分析。接着还要客观的分析机器性能、安全、重量、耐用性，并且成本也要考虑在内。每一个至关重要的部分要优化它的比例和尺寸，同时也要保持与其它组成部分的平衡。 选择原材料和工艺的方法。通过力学原理来分析和实现这些重要的特性，如稳定和反应的能量和摩擦力的利用，动力惯性、加速度、能量；包括材料的弹性强度、应力和刚度等物理特性，以及流体的润滑和驱动器的流体力学。设计的过程是一个反复与合作的过程，无论是正式的还是非正式的，对设计者来说每个阶段都很重要。。产品设计需要大量的研究和提升。许多的想法,必须通过努力去研究成为一种理念,然后去使用或放弃。
中等分辨率制备分离的 快速色谱技术 W. Clark Still,* Michael K a h n , and Abhijit Mitra Departm(7nt o/ Chemistry, Columbia Uniuersity,1Veu York, Neu; York 10027 ReceiLied January 26, 1978 我们希望找到一种简单的吸附色谱技术用于有机化合物的常规净化。这种技术是适于传统的有机物大规模制备分离，该技术需使用长柱色谱法。尽管这种技术得到的效果非常好，但是其需要消耗大量的时间，并且由于频带拖尾经常出现低复原率。当分离的样本剂量大于1或者2g时，这些问题显得更加突出。近年来，几种制备系统已经进行了改进，能将分离时间减少到1-3h，并允许各成分的分辨率ΔR f≥（使用薄层色谱分析进行分析）。在这些方法中，在我们的实验室中，媒介压力色谱法1和短柱色谱法2是最成功的。最近，我们发现一种可以将分离速度大幅度提升的技术，可用于反应产物的常规提纯，我们将这种技术称为急骤色谱法。虽然这种技术的分辨率只是中等（ΔR f≥），而且构建这个系统花费非常低，并且能在10-15min内分离重量在的样本。4 急骤色谱法是以空气压力驱动的混合介质压力以及短柱色谱法为基础，专门针对快速分离，介质压力以及短柱色谱已经进行了优化。优化实验是在一组标准条件5下进行的，优化实验使用苯甲醇作为样本，放在一个20mm*5in.的硅胶柱60内，使用Tracor 970紫外检测器监测圆柱的输出。分辨率通过持续时间（r）和峰宽（w,w/2）的比率进行测定的（Figure 1），结果如图2-4所示，图2-4分别放映分辨率随着硅胶颗粒大小、洗脱液流速和样本大小的变化。
机械设计理论 机械设计是一门通过设计新产品或者改进老产品来满足人类需求的应用技术科学。它涉及工程技术的各个领域，主要研究产品的尺寸、形状和详细结构的基本构思，还要研究产品在制造、销售和使用等方面的问题。 进行各种机械设计工作的人员通常被称为设计人员或者机械设计工程师。机械设计是一项创造性的工作。设计工程师不仅在工作上要有创造性，还必须在机械制图、运动学、工程材料、材料力学和机械制造工艺学等方面具有深厚的基础知识。如前所诉，机械设计的目的是生产能够满足人类需求的产品。发明、发现和科技知识本身并不一定能给人类带来好处，只有当它们被应用在产品上才能产生效益。因而，应该认识到在一个特定的产品进行设计之前，必须先确定人们是否需要这种产品。 应当把机械设计看成是机械设计人员运用创造性的才能进行产品设计、系统分析和制定产品的制造工艺学的一个良机。掌握工程基础知识要比熟记一些数据和公式更为重要。仅仅使用数据和公式是不足以在一个好的设计中做出所需的全部决定的。另一方面，应该认真精确的进行所有运算。例如，即使将一个小数点的位置放错，也会使正确的设计变成错误的。 一个好的设计人员应该勇于提出新的想法，而且愿意承担一定的风险，当新的方法不适用时，就使用原来的方法。因此，设计人员必须要有耐心，因为所花费的时间和努力并不能保证带来成功。一个全新的设计，要求屏弃许多陈旧的，为人们所熟知的方法。由于许多人墨守成规，这样做并不是一件容易的事。一位机械设计师应该不断地探索改进现有的产品的方法，在此过程中应该认真选择原有的、经过验证的设计原理，将其与未经过验证的新观念结合起来。 新设计本身会有许多缺陷和未能预料的问题发生，只有当这些缺陷和问题被解决之后，才能体现出新产品的优越性。因此，一个性能优越的产品诞生的同时，也伴随着较高的风险。应该强调的是，如果设计本身不要求采用全新的方法，就没有必要仅仅为了变革的目的而采用新方法。 在设计的初始阶段，应该允许设计人员充分发挥创造性，不受各种约束。即使产生了许多不切实际的想法，也会在设计的早期，即绘制图纸之前被改正掉。只有这样，才不致于堵塞创新的思路。通常，要提出几套设计方案，然后加以比较。很有可能在最后选定的方案中，采用了某些未被接受的方案中的一些想法。
各种花卉的英文名 iris蝴蝶花 cockscomb鸡冠花 honeysuckle金银花chrysanthemum菊花 carnation康乃馨 orchid兰花 canna美人蕉 jasmine茉莉花 daffodil水仙花 peony牡丹 begonia秋海棠 cactus仙人掌 christmas flower圣诞花/一品红poppy罂粟 tulip郁金香 chinese rose月季 violet紫罗兰 peach flower桃花 aloe芦荟 mimosa含羞草 dandelion蒲公英
plum bolssom梅花中国水仙 new year lily 石榴 pomegranate 月桂victor's laurel 报春花 polyanthus 木棉 cotton tree 紫丁香 lilac 吊钟 lady's eardrops 紫荆 Chinese redbud 百合 lily 紫罗兰 wall flower 桃花 peach 紫藤 wisteria 杜鹃 azalea 铃兰 lily-of-the-valley 牡丹 tree peony 银杏 ginkgo 芍药 peony 蝴蝶兰 moth orchid 辛夷 violet magnolia 蟹爪仙人掌 Christmas cactus 玫瑰 rose 郁金香 tulip
茶花 common camellia 千日红 common globe-amaranth 非洲堇 African violet 栀子花 cape jasmine 木槿 rose of Sharon 风信子 hyacinth 百子莲 African lily 牵牛花 morning glory 君子兰 kefir lily 荷包花 lady's pocketbook 含笑花 banana shrub 非洲菊 African daisy 含羞草 sensitive plant 茉莉 Arabian jasmine 猪笼草 pitcher plant 凌霄花 creeper 树兰 orchid tree 康乃馨coronation 鸡冠花 cockscomb 荷花lotus 鸢萝 cypress vine 菩提 botree
外文翻译 英文原文 Belt Conveying Systems Development of driving system Among the methods of material conveying employed，belt conveyors play a very important part in the reliable carrying of material over long distances at competitive cost．Conveyor systems have become larger and more complex and drive systems have also been going through a process of evolution and will continue to do so．Nowadays，bigger belts require more power and have brought the need for larger individual drives as well as multiple drives such as 3 drives of 750 kW for one belt(this is the case for the conveyor drives in Chengzhuang Mine)．The ability to control drive acceleration torque is critical to belt conveyors’ performance．An efficient drive system should be able to provide smooth，soft starts while maintaining belt tensions within the specified safe limits．For load sharing on multiple drives．torque and speed control are also important consideratio ns in the drive system’s design. Due to the advances in conveyor drive control technology，at present many more reliable．Cost-effective and performance-driven conveyor drive systems cov ering a wide range of power are available for customers’ choices[1]. 1 Analysis on conveyor drive technologies 1．1 Direct drives Full-voltage starters．With a full-voltage starter design，the conveyor head shaft is direct-coupled to the motor through the gear drive．Direct full-voltage starters are adequate for relatively low-power, simple-profile conveyors．With direct fu11-voltage starters．no control is provided for various conveyor loads and．depending on the ratio between fu11- and no-1oad power requirements，empty starting times can be three or four times faster than full load．The maintenance-free starting system is simple，low-cost and very reliable．However, they cannot control starting torque and maximum stall torque；therefore．they are
植物花卉中英文对照、花卉英文名大全 金橘－－－－－－－－－－－－－－kumquat 米仔兰(米兰）－－－－－－－－－ milan tree 变叶木－－－－－－－－－－－－－croton 一品红－－－－－－－－－－－－－poinsettia 扶桑－－－－－－－－－－－－－－Chinese hibiscus 吊灯花－－－－－－－－－－－－－fringed hibiscus 马拉巴栗（发财树)－－－－－－－ Guiana chestnut 山茶－－－－－－－－－－－－－－camellia 云南山茶－－－－－－－－－－－－Yunnan camellia 金花茶－－－－－－－－－－－－－golden camellia 瑞香－－－－－－－－－－－－－－daphne 结香－－－－－－－－－－－－－－paper bush 倒挂金钟－－－－－－－－－－－－fuchsia 八角金盘－－－－－－－－－－－－Japan fatsia 常春藤－－－－－－－－－－－－－ivy 鹅掌柴－－－－－－－－－－－－－umbrella tree 杜鹃花－－－－－－－－－－－－－rhododendron 茉莉花－－－－－－－－－－－－－jasmine 桂花－－－－－－－－－－－－－－sweet osmanthus 夹竹桃－－－－－－－－－－－－－sweet-scented oleander 黄花夹竹桃－－－－－－－－－－－lucky-nut-thevetia 鸡蛋花－－－－－－－－－－－－－frangipani 龙吐珠－－－－－－－－－－－－－bleeding-heart glorybower 夜香树（木本夜来香）－－－－－－night jasmine 鸳鸯茉莉－－－－－－－－－－－－broadleaf raintree 栀子花－－－－－－－－－－－－－cape jasmine 蝴蝶兰－－－－－－－－－－－－－moth orchid 卡特兰－－－－－－－－－－－－－cattleya 石斛－－－－－－－－－－－－－－dendrobium 兜兰－－－－－－－－－－－－－－lady slipper 兰花－－－－－－－－－－－－－－orchid 春兰－－－－－－－－－－－－－－goering cymbidium
英文论文APA格式 英文论文一些格式要求与国内期刊有所不同。从学术的角度讲，它更加严谨和科学，并且方便电子系统检索和存档。 版面格式
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A Distributed Approach for Track Occupancy Detection Abstract This paper investigates the problem of track occupancy detection in distributed settings. Track occupancy detection determines which tracks are occupied in a railway system. For each track, the Neyman–Pearson structure is applied to reach the local decision. Globally, it is a multiple hypotheses testing problem. The Bayesian approach is employed to minimize the probability of the global decision error. Based on the prior probabilities of multiple hypotheses and the approximation of the prior probabilities of multiple hypotheses and the approximationofthereceiving operation characteristic curve of the local detector, a person-by-person optimization method is implemented to obtain the fusion rule and the local strategies off line. The results are illustrated through an example constructed from in situ devices. Key Words:Track occupancy detection,Neyman–Pearson, Generalized likelihood ratio test, Bayesian approach,Distributed detection 1Introduction With respect to the majority of railway systems in China, a quasi-moving block method is employed to specify the safe zone of a train. A key piece of knowledge to be determined is the set of track segments that are occupied, i.e., track occupancy detection. Then the speed restriction curves for the following trains are calculated accordingly. When there are misdetections, collisions may happen; additionally, false alarms may lead to declines of line capacity. Track occupancy detection is achieved by a set of track circuits. The track circuit is a crucial device mainly composed of a transmitter–receiver pair and a track segment. The measurement is the receiving signal at the end of the track. For each segment, a decision is made locally and individually, which leads to frequent ambiguities on which tracks are occupied for the whole line. It means that the false alarm rate of the line increases greatly. Besides, for the next generation of railway systems, a moving block method is adopted. Such a method requires the exact position and velocity of the train. However, those data are not provided in the current detection mechanism.
iris 蝴蝶花hon eysuckle 金银花 chrysanthemum 菊花 carnation 康乃馨 orchid 兰花 canna 美人蕉 jasmine 茉莉花 daffodil 水仙花 peony 牡丹 begonia 秋海棠 cactus 仙人掌 christmas flower 圣诞花/一品红 poppy 罂粟 tulip 郁金香 chi nese rose 月 季 violet 紫罗兰 peach flower 桃花 aloe 芦荟 mimosa 含羞草 dandelion 蒲公英 plum bolssom 梅花中国水仙new year lily
石榴pomegranate 月桂victor's laurel 报春花polyanthus 木棉cotton tree 紫丁香lilac 吊钟lady's eardrops 紫荆Chinese redbud 百合lily 紫罗兰wall flower 桃花peach 紫藤wisteria 杜鹃azalea 铃兰lily-of-the-valley 牡丹tree peony 银杏ginkgo 芍药peony 蝴蝶兰moth orchid 辛夷violet magnolia 蟹爪仙人掌Christmas cactus 玫瑰rose 郁金香tulip
非洲堇African violet 栀子花cape jasmine 木槿rose of Sharon 风信子hyacinth 百子莲African lily 牵牛花morning glory 君子兰kefir lily 荷包花lady's pocketbook 含笑花bana shrub 非洲菊African daisy 含羞草sensitive plant 茉莉Arabian jasmine 猪笼草pitcher plant 凌霄花creeper 树兰orchid tree 康乃馨coronation 荷花lotus 鸢萝cypress vine 菩提botree 大理花dahlia
近几年，我厂和英国、西班牙的几个公司有业务往来，外商传真发来的图纸都是英文标注，平时阅看有一定的困难。下面把我们积累的几点看英文图纸的经验与同行们交流。 1标题栏 英文工程图纸的右下边是标题栏（相当于我们的标题栏和部分技术要求），其中有图纸名称（TILE）、设计者（DRAWN）、审查者（CHECKED）、材料（MATERIAL）、日期（DATE）、比例（SCALE）、热处理（HEAT TREATMENT）和其它一些要求，如： 1)TOLERANCES UNLESS OTHERWISE SPECIFIAL 未注公差。 2)DIMS IN mm UNLESS STATED 如不做特殊要求以毫米为单位。 3)ANGULAR TOLERANCE±1°角度公差±1°。 4)DIMS TOLERANCE±0.1未注尺寸公差±0.1。 5)SURFACE FINISH 3.2 UNLESS STATED未注粗糙度3.2。 2常见尺寸的标注及要求 2.1孔（HOLE）如： （1）毛坯孔：3"DIAO+1CORE 芯子3"0+1; （2）加工孔：1"DIA1"; （3）锪孔：锪孔(注C＇BORE=COUNTER BORE锪底面孔); （4）铰孔：1"/4 DIA REAM铰孔1"/4; （5）螺纹孔的标注一般要表示出螺纹的直径，每英寸牙数（螺矩）、螺纹种类、精度等级、钻深、攻深，方向等。如： 例1.6 HOLES EQUI-SPACED ON 5"DIA (6孔均布在5圆周上（EQUI-SPACED=EQUALLY SPACED均布） DRILL 1"DIATHRO＇ 钻1"通孔（THRO＇=THROUGH通） C/SINK22×6DEEP 沉孔22×6 例2.TAP7"/8-14UNF-3BTHRO＇ 攻统一标准细牙螺纹，每英寸14牙，精度等级3B级 （注UNF=UNIFIED FINE THREAD美国标准细牙螺纹） 1"DRILL 1"/4-20 UNC-3 THD7"/8 DEEP 4HOLES NOT BREAK THRO钻 1"孔，攻1"/4美国粗牙螺纹，每英寸20牙，攻深7"/8,4孔不准钻通（UNC=UCIFIED COARSE THREAD 美国标准粗牙螺纹）
Title: Modelling of transport costs and logistics for on-farm milk segregation in New Zealand dairying Material Source: Computers and Electronics in Agriculture Author: A. E. Dooley, Parker, H. T. Blair Abstract On-farm milk segregation to keep milk with high value properties separate from bulk milk will affect transport logistics. Separate milk collection, either as independent runs for different milk types,or storage of distinct milk types in the truck and trailer units, may increase the length and number of runs required. Two contrasting regions,with different farm sizes and roading networks were modelled,at two stages of lactation over 20 years. Thirty farms in each region were modelled with 0, 25, 50 and 100% of farms per region changing milk types over a transition period of up to 18 years. Genetic algorithm software was used to search for the order of the farm milk collection pick-ups which gave an optimal, least cost solution for milk collection for each prescribed set of inputs. Milk collection costs within scenario were variable over time depending on the amounts of the different milk types, increasing whenever another run was required, then decreasing over time as the milk load increased. Milk collection cost is small relative to milk income, with the status quo (SQ) cost for milk collection being less than NZ$9.61/kl for the North Island and NZ$13.53/kl for the South Island farm sets. The increased transport costs associated with collecting two milk types ranged from 4.5 to 22.0% more for the different scenarios. The extra cost to an average size North Island farm changing systems (25% farms changing), compared to an equivalent status quo farm, would be between NZ$307 and NZ$1244 per year. Fewer farms changing to differentiated milk production increased the costs per kilolitre of differentiated milk. Keywords: Milk transport; Scheduling; Milk segregation; Collection costs 1.Introduction
常见花的英文单词 中国水仙new year lily 石榴pomegranate 月桂victor's laurel 报春花polyanthus 木棉cotton tree 紫丁香lilac 吊钟lady's eardrops 紫荆Chinese redbud 百合lily 紫罗兰wall flower 桃花peach 紫藤wisteria 杜鹃azalea 铃兰lily-of-the-valley 牡丹tree peony 银杏ginkgo 芍药peony 蝴蝶兰moth orchid 辛夷violet magnolia 蟹爪仙人掌Christmas cactus 玫瑰rose 郁金香tulip 茶花common camellia 千日红common globe-amaranth 非洲堇African violet 栀子花cape jasmine 木槿rose of Sharon 风信子hyacinth 百子莲African lily 牵牛花morning glory 君子兰kefir lily 荷包花lady's pocketbook 含笑花banana shrub 非洲菊African daisy 含羞草sensitive plant 茉莉Arabian jasmine 猪笼草pitcher plant 凌霄花creeper 树兰orchid tree 康乃馨coronation 鸡冠花cockscomb
荷花lotus 鸢萝cypress vine 菩提botree 大理花dahlia 圣诞百合Christmas bell 一串红scarlet sage 紫薇crape myrtle 勿忘我forget-me-not 睡莲water lily 文心兰dancing lady 吊兰spider plant 白头翁pappy anemone 向日葵sunflower 矢车菊cornflower 竹bamboo 金鱼草snapdragon 夹竹桃oleander 金盏花pot marigold 月季花china rose 金银花honeysuckle 长春花old maid 金莲花garden nasturtium 秋海棠begonia 非洲凤仙African touch-me-not 美人蕉canna 曼陀罗angel's trumpet 晚香玉tuberose 梅花flowering apricot 野姜花ginger lily 圣诞红common poinsettia 菊花chrysanthemum 虞美人Iceland poppy 昙花epiphyllum 鸢尾iris 龙胆royal blue 腊梅winter sweet 麒麟花crown of thorns 木芙蓉cotton rose 九重葛paper flower 火鹤花flamingo flower 三色堇tricolor viola 嘉德丽亚兰cattleya
液位控制系统论文中英文资料对照外文翻译 The liquid level control system based on dde\matlab\simulink Process control is an important application field of automatic technology, it is to point to the level, temperature, flow control process variables, such as in metallurgy, machinery, chemical, electric power, etc can be widely used. Especially liquid level control technology in real life, played an important role in production, for example, the water supply, civil water tower if low water levels, can affect people's lives in water; Industrial enterprises with water, if the drainage water drainage or controlled properly or not, in relation to the workshop of condition; Boiler drum, if the control level boiler is too low, can make level boiler overheating, possible accident; Jing flow, liquid level control tower control accuracy and level of the craft can influence the quality of the products and the cost, etc. In these production field, are basically labor strength or the operation has certain risk nature of work, extremely prone to accidents caused by operating error, the losses, killing manufacturer. Visible, in actual production, liquid level control accuracy and control effects directly affect the factory production cost and economic benefit of safety coefficient. Even equipment So, in order to ensure safety, convenient operation, you have to research the development of a d v a n c e d l e v e l c o n t r o l m e t h o d s a n d s t r a t e g i e s. The graduation design topic is the liquid level control system based on dde\matlab\simulink\force control, Among them was controlled object for tank level, Communication mode for DDE communications , Matlab is mainly used in the simulation test ,And force control software used for modeling, This system mainly through combination of hardware and software device to achieve precise control of liquid level , In modern industry level control of important component, it influence upon production not allow to ignore, in order to ensure safety in production and the product quality and quantity, the level and perform effective control is very necessary, The following is a description of all aspects：
英文资料 Limits and Tolerances The breakage of the machine spare parts ,generally always from the surface layer beginning of .The function of the product ,particularly its credibility and durable ,be decided by the quantity of spare parts surface layer to a large extent. Purpose that studies the machine to process the surface quantity be for control the machine process medium various craft factor to process the surface quantity influence of regulation, in order to make use of these regulations to control to process the process, end attain to improve the surface quantity, the exaltation product use the function of purpose . The machine processes the surface quantity to use the influence of the function to the machine (A) The surface quantity to bear to whet the sexual influence 1.Rough degree of surface to bear to whet the sexual influence A just process vice-of two contact surfaces of good friction, the first stage is rough only in the surface of the peak department contact ,the actual contact area is much smaller than theoretical contact area, in contact with each other the peak of the units have very great stress, to produce actual contact with the surface area of plastic deformation, deformation and peak between the Department of shear failure, causing serious wear. Parts wear may generally be divided into three stages, the initial stage of wear and tear, normal wear and tear all of a sudden intense phase of stage wear. Parts of the surface roughness of the surface wear big impact. In general the smaller the value of surface roughness, wear better. However, surface roughness value is too small, lubricants difficult to store, contact between the adhesive-prone elements, wear it to increase. Therefore, the surface roughness of a best value, the value and parts of the work related to increased work load, the initial wear increased, the best rough surface is also increased. 2.Cold Working hardening the surface of the wear resistance Processing the Cold Work hardening the surface of the friction surface layer of metal microhardness increase, it will generally improve the wear resistance. Cold Working but not a higher degree of hardening, wear resistance for the better, because too much will lead to hardening of the Cold Working excessive loose organization of