变速箱
在我国工程机械主要核心元部件中，唯有传动元部件国内配套体系最完善，市场满足率也最高，且也是最具自主知识产权的关键配套件。国产核心元部件之一的液压元件，从价值上讲，国产配套满足率只有30%，特别是价值很高的变量液压元件，几乎全依赖进口。而传动核心元部件的国产配套件的满足率在70%～75%以上，只有少数高档传动元部件及大规格传动元部件仍需进口。
在变速箱方面，世界上一直是两大流派，一种是像德国采埃孚和美国德纳那样的定轴式箱，另一种就像目前我国用得最多的及卡特、小松等所用的行星式变速箱。行星式变速箱中，像我国目前的只有两个行星排，叫简单行星式，制造、维护相对比较容易一些。另一种像卡特、小松等复杂行星式，制造工艺比较复杂。这两种流派各有优劣，因此两大流派一直在世界上并存。但对中国的实际情况，复杂行星式制造难度更大，川齿引进卡特技术，最终未形成产品就是一个例子。
老的简单行星式变速箱，虽然目前仍在最广泛地使用，但由于某些缺陷已从根本上无法克服，技术也再无突破性发展。因此变速箱在整个行业的技术发展中，瞄准了世界一流水平的采埃孚箱。既有杭齿引进采埃孚技术基础，又有柳工与采埃孚合资的技术基础，同时又有广泛地使用、维护及配件基础。另外与其配套的冲压焊接式变矩器已在陕西航天动力开发成功，并已大批量配套。因此中国目前新型双变技术主流方向，已正在向采埃孚型方向发展。
主要配套件企业杭齿所生产的高水平采埃孚双变已批量推向了市场，并从装载机变速箱经过变型设计已发展到压路机、平地机等多种工程机械产品上。主机企业柳工、龙工、厦工、成工等，都已不同程度地研发出或正在研发该系列变速箱。并已从3t型、5t型到6t型,已逐步开始形成了中等型号系列新型双变系统。该双变的关键技术是微电脑控制的电液控制系统。其中最关键的核心部份是微处理器及电液控制阀。目前中国国内攻下这两项关键核心技术已到了最后攻坚阶段。一旦这些核心技术完全攻克，我国新一代换代双变技术将会很快得到广泛实现。
在驱动桥方面，目前我国工程机械驱动桥新技术的发展，比新型双变更成熟一些。目前我国工程机械驱动桥技术发展的大方向及主流是向带差速锁的湿式桥方向发展。湿式桥的基本结构也有两种型式，一种是整体式桥壳，一种是三节式桥壳。整体式桥壳主传动在中间，轮边减速器及湿式制动器在两边。而三节式桥，桥壳分为三段，中间部份为一箱型结构，主传动、湿式制动器、轮边减速器全部集中在中间部份。两种结构也没有哪一种比另一种绝对的好，或绝对不好，也各有优劣。因此，这两种结构也会同时并存，至于用哪一种结构好，要根据自己的实际情况来定。
就目前情况来看，整体式更适合我国目前的具体情况及制造水平。目前专业桥厂之一的分宜驱动桥有限公司每月都有一定批量的湿式桥提供给市场。柳工的整体式湿式桥，成工的三节式湿式桥系列产品基本上已开始形成批量生产，并已
开始随主机出口。其它专业配套企业及主机企业都已不同程度地推出了湿式桥。
gearbox
In our country's construction machinery major core yuan parts, only drive yuan parts a complete system of the domestic market, meet the most perfect is the highest rate, and is also the most independent intellectual property rights of the key accessories. One of the components of the domestic core yuan hydraulic components, from the value of speaking, domestic supporting meet rate of only 30%, especially high value of the variable hydraulic components and almost all rely on imports. And driving core components of domestic fittings of the RMB rate of 70% ~ 75% in meet the above, only a few high-grade transmission parts and large size transmission RMB yuan still need to import components.
In the gearbox, the world has been two major schools, one kind is like those in the United States and Germany's Gardner that fixed axis type box, another kind of like at present our country the most used and carter, komatsu, the planet type used the gearbox. The planet type gearbox, as our country's current only two planets row, call simple planet type, manufacturing, maintenance is relative easy some. Another kind of like carter, komatsu such complex planet type, manufacturing process is more complex. The two schools each have advantages and disadvantages, so both great schools has been in the world coexist. But to the actual situation in China, the complex planet type manufacturing more difficult, sichuan tooth, and finally introduce carter technology not form product is one example. The simple old planet type gearbox, though still in the most widely used, but because some defect has fundamentally,
unable to overcome technical no breakthrough development. So in the technology of industry of the gearbox development, aiming at the world top level of the adopt of those cases. Evans Both hangzhou tooth in those introduced Evans technology base, and liugong and adopted by those of the joint venture's technology foundation, at the same time and have widely use, maintenance and parts basis. In addition the matched stamping welding type torque converter space power development in shaanxi has success, and has large quantities of products. So China, the new change direction, double technical mainstream are to adopt those Evans type direction.
Main fittings enterprise hangzhou, the production of the high level's double change those in already mass to the market, and from the loader transmission through the changing design has developed roller, and the ground machine, etc DuoZhong engineering machinery products. Host enterprise liugong, dragon work, work, work, a tall, have different degree developed or are developing the series gearbox. And from 3 t, has 5 t to 6 t, has gradually began to form the new medium type series double change system. The double change the key technology of microcomputer control is the electro-hydraulic control system. One of the most critical part is the core of the microprocessor and electrohydraulic control valves. At present Chinese home for two of the key technology has at last a crucial stage. Once these core technology, our country completely conquer a new generation generation double change technology will soon be widely realized.
In the axles, at present our country engineering mechanical drive the development of new technology, new double change than
some mature. At present our country construction machinery driving axle technology development and the general direction of mainstream is to take differential of lock of wet bridge development direction. Wet the basic structure of the bridge and two types, one kind is integral bridge shell, one kind is three type bridge shell. Integral bridge main transmission in the middle, shell wheel edges reducer and wet brake on the sides. And three type bridge, the bridge housing into three parts, and the middle part is a box structure, main transmission, wet brake, wheel edges reducer concentrated in part of all. Two kinds of structure and no one is better than the other kind of absolute good, bad or absolute, also have each quality. Therefore, the two structures also coexist, as to what a good structure, according to their actual condition to decide.
毕业设计说明书 英文文献及中文翻译 学院：专 2011年6月 电子与计算机科学技术软件工程
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旅游服务贸易外文翻译文献(文档含英文原文和中文翻译)
旅游服务贸易的国际竞争力：罗马尼亚的案例 引言 旅游业是唯一的可以为任何发展水平的国家提供贸易机会的服务活动。然而，它也是一个很大程度因为国家的能力和在全球经济中的表现而又有明确的利益分配不均行业，而这又需要提高自己的竞争力。 自20世纪90年代初，罗马尼亚旅游业经历了出口量，生长速率和结构的重大变化。这些不同的波动都影响了罗马尼亚在国际旅游市场上相对的竞争地位并引起了其旅游贸易平衡的变化。同时，新的和更多的错杂的欧式建筑，引起了罗马尼亚的区域旅游竞争力的显著变化。 在此背景下，本文试图提出一个框架，以竞争力和旅游贸易表现之间的关系为重点，来评估罗马尼亚的旅游服务贸易的国际竞争力。 一、国际竞争力视角：国际竞争力之与国际旅游业的相关性 国际竞争力的概念，尽管有争议，难以捉摸，但现在已经得到认可，并继续吸引世界各地的学者和决策者的关注。 到目前为止，为提高国际竞争力已采取措施，都被认为是在经济层面进行的(加瑞利，2003)通常是指一个国家生产的商品和服务，以满足国际市场的考验，并同时保持和增加公民的收入的能力(欧洲委员会，2007)。 由于竞争力最终取决于一国企业在国内和国际的市场成功，所以对竞争力的注意力都集中在企业层面的竞争力上(波特，1990)，对于此的普遍理解是指“……该公司保持，并更好的是，扩大其全球市场份额，增加和扩大利润的能力” (克拉克和盖，1998, 经济合作与发展组织，1993)。 因此，虽然广泛流传但是国际竞争力作为与国家经济和其国际贸易相关
的理论基础已经不太在学术文献进行分析。因此，一个国家国际竞争力的性质，效益和局限性仍然含糊不清(科尔德威尔，2000,克鲁格曼，1994, 1996)。 国际竞争力，是指一个国家在货物和服务贸易方面巩固和保持贸易优势相对于世界其他地区的贸易优势。 每当一个国家的经济福利通过贸易流量的增加，或通过从初始平衡状态的贸易条件的改变而增加，他的国际竞争力都会得到提高(科尔德威尔，2000)。 贸易理论表示，经济福利依赖于一个国家有比较优势的货物和服务的生产。这实际上意味着当生产符合一国的比较优势的情况时国际竞争力能得到保障。如果一国能在国际上表现良好并在出口市场竞争成功，这可能就是他们健全的国际竞争力的标志。 因此，在国际上，竞争力定义为一个经济体能够吸引其出口需求和投资供给需求的能力和在所有社会规范内提升公民生活水平的能力。这反过来又取决于宏观和微观经济政策，影响生产的经济生产率要素和经营成本的法规和制度。 一个可用的文献回顾和实证证据支持国际竞争力可以解释为在一定程度上，一个国家的出口能力这一观点(道乐和沃尔夫，1993, 格博格等. 2004)。还有就是，事实上，是出口表现和国际竞争力之间的循环关系。出口是国际竞争力的第一衡量指标。出口情况的改善会导致了一个国家的竞争力提升。这种效果是一个企业的技能，知识，创新和运用新技术并能够在一个成功的商业方式中利用技术机会等的结果。 另一方面，为了在竞争激烈的全球市场努力成功实现出口，一个国家被迫提高竞争力。更具竞争力的国家，它的经济更强大。因此，它更有能力在全球市场竞争，以吸引具有较高的知识，技能，水平人们去购买新技术等，
指纹识别方法的综述 摘 要: 对在指纹的预处理和特征提取、指纹分类、指纹的匹配过程中的方向图、滤波器、神经网络等关 键性原理和技术做了详细的说明,并对在各个过程中用到的方法做了进一步的比较,讨论了各种方法的优越性。 0 引 言 自动指纹识别是上世纪六十年代兴起的,利用计算机取代人工来进行指纹识别的一种方法。近年 来,随着计算机技术的飞速发展,低价位指纹采集仪的出现以及高可靠算法的实现,更使得自动指纹识 别技术越来越多地进入到人们的生活和工作中,自动指纹识别系统的研究和开发正在成为国内外学术 界和商业界的热点。相对于其他生物特征鉴别技术例如语音识别及虹膜识别,指纹识别具有许多独到 的优点,更重要的是它具有很高的实用性和可行性,已经被认为是一种理想的身份认证技术,有着十分 广泛的应用前景,是将来生物特征识别技术的主流。 1 指纹取像 图 1 是一个自动指纹识别系统AFIS(Automated Fingerprint Identification System) 的简单流程。 → → → ↓ ↑ ———— 将一个人的指纹采集下来输入计算机进行处理是指纹自动识别的首要步骤。指纹图像的获取主要利用设备取像,方便实用,比较适合AFIS 。利用设备取像的主要方法又利用光学设备、晶体传感器和超声波来进行。光学取像设备是根据光的全反射原理来设计的。晶体传感器取像是根据谷线和脊线皮肤与传感器之间距离不同而产生的电容不同来设计的。超声波设备取像也是采用光波来取像,但由于超声波波长较短,抗干扰能力较强,所以成像的质量非常好。 2 图像的预处理与特征提取 无论采取哪种方法提取指纹,总会给指纹图像带来各种噪声。预处理的目的就是去除图像中的噪 音,把它变成一幅清晰的点线图,以便于提取正确的指纹特征。预处理是指纹自动识别过程的第一步, 它的好坏直接影响着指纹识别的效果。常用的预处理与特征提取( Image Preprocessing and Feature Ex 2 t raction) 方法的主要步骤包括方向图计算、图像滤波、二值化、细化、提取特征和后处理。当然这些步骤 可以根据系统和应用的具体情况再进行适当变化。文献[ 1 ]提出了基于脊线跟踪的方法能够指纹取像 图像预处理 特征提取 指纹识别 数据库管理
加工中心数控技术 出处：数控加工中心的分类以及各自特点 出版社:化学工业出版社; 第1版 (2009年3月16日) 作者：徐衡、段晓旭 加工中心是典型的集高技术于一体的机械加工设备，它的发展代表了一个国家设计制造的水平也大大提高了劳动生产率，降低了劳动成本，改善了工人的工作环境，降低了工人的劳动强度。本文经过对不同运动方案和各部件的设计方案的定性分析比较确定该教立式加工中心的进给传动方案为：采用固定床身，电主轴通过安装座安装在床身导轨的滑座上，床身导轨采用滚动导轨，可以实现Y 方向的进给运动。由X-Y双向精密数控工作台带动工件完成X，Y两个方向的进给运动;X，Y，Z三个方向的进给运动均滚珠丝杠，并由交流伺服电机驱动。导轨、滚珠丝杠有相应的润滑、防护等装置。 加工中心（英文缩写为CNC 全称为Computerized Numerical Control）：是带有刀库和自动换刀装置的一种高度自动化的多功能数控机床。在中国香港，台湾及广东一代也有很多人叫它电脑锣。 工件在加工中心上经一次装夹后，数字控制系统能控制机床按不同工序，自动选择和更换刀具，自动改变机床主轴转速、进给量和刀具相对工件的运动轨迹及其他辅助机能，依次完成工件几个面上多工序的加工。并且有多种换刀或选刀功能，从而使生产效率大大提高。 加工中心数控机床是一种装有计算机数字控制系统的机床，数控系统能够处理加工程序，控制机床完成各种动作。与普通机床相比，数控机床能够完成平面曲线和空间曲面的加工，加工精度和生产效率都比较高，因而应用日益广泛。 数控机床的组成 一般来说，数控机床由机械部分、数字控制计算机、伺服系统、PC控制部分、液压气压传动系统、冷却润滑和排泄装置组成。数控机床是由程序控制的，零件的编程工作是数控机床加工的重要组成部分。伺服系统是数控机床的驱动部分，计算机输出的控制命令是通过伺服系统产生坐标移动的。普通的立式加工中心有三个伺服电机，分别驱动纵向工作台、横向工作台、主轴箱沿X向、Y向、Z向运动。X、Y、Z是互相垂直的坐标轴，因而当机床三坐标联动时可以加工空
外文资料译文及原文 译文(一) 消费者体验旅游和品牌的结合 米契尔罗伯特 定义消费者体验旅游 制造工厂参观，公司博物馆和公司访客中心表现为被不同名字已知的观光事业片段：制造业观光事业，工业的吸引、工业的观光事业和工业的遗产观光事业。在每一个描述性的长期的共同目标是在消费者学习品牌，其运作，生产过程，历史和历史意义的时候建立一个消费者和品牌之间的纽带。有人建议在这里CET代表一个统一的主题的旅游。这个术语捕捉消费者的消费能力发现更多关于他们所消费的品牌，而制造商可以在与该工厂的客人接触的30-120分钟时间里建立与这些消费者更密切的关系。 参与的品牌 品牌经理寻求解决在三个层次消费者的需求： （1）功能（对消费者提供解决问题的办法）; （2）符号（提供心理欲望满意度）; （3）经历（提供感官快乐，品种，认知，刺激） CET可以通过视觉地介绍品牌，运作，生产工艺，历史和历史意义加强消费者和品牌之间的纽带。这种纽带可以被看作是个人品牌参与和品牌忠诚度的提高。认知参与反映了消费者对产品的兴趣（或学习更多）。CET可以通过刺激消费者对于品牌和生产过程的想象提高消费者的认知水平。此外，积极口碑沟通刺激满足旅客可能会比其他形式的促销更可信。 缺乏现有的直接研究关注 迄今为止，CET已经在行销文学中受到一点注意。米契尔和米契尔（2001年）对此内容这种的旅游网站进行了评估。此外，这些相同的作者已经评估食物和饮料工业中的现象（米契尔和米契尔，2000年），非营利部门（米契尔和米契尔，2001年b），和整体经济（米契尔等， 2001）。米契尔和米契尔（2002）为学者提出了格式，用来评估在当地的服务领域这些设施的地方利益。该主题通常包括对整合营销的简要讨论，但已收到直接研究的关注很有限。
软件工程专业BIOS资料外文翻译文献 What is the Basic Input Output System (BIOS)? BIOS is an acronym for Basic Input Output System. It is the program that stores configuration details about your computer hardware and enables your computer to boot up. Every time your computer is switched on the BIOS loads configuration data into main memory, performs a routine diagnostic test on your hardware, then loads the operating system. The BIOS resides in a ROM (Read-Only memory) chip, which is mounted on the motherboard, usually in a socket so it is removable. To the right is an example of what a BIOS chip may look like in your motherboard. This is a PLCC 32 pin type BIOS chip. It is a very common type. Every computer has BIOS. There are many types but the most common type of BIOS 's come from: AMI, Award and Phoenix. Motherboard manufacturers buy or lease the BIOS source code from these companies. The BIOS tells the operating system in your computer how to boot up, where to load everything, what to load, what memory and CPU are present and much more. A good comparison to further understand the
文献出处：Barattieri A. The mechanism of service trade liberalization[J]. Journal of International Economics, 2014, 92(1): 1-13. （声明：本译文归百度文库所有，完整译文请到百度文库。） 原文 The mechanism of service trade liberalization Barattieri A Abstract In this paper, Service trade liberalization is the key areas of the United States to promote the TPP negotiations, the United States in the negotiations are pushing mechanism of a high standard of service trade liberalization. In this paper the progress of the TPP negotiations and services trade issues important position, on the basis of the acceptance, architecture design, focus on services, regulatory consistency four aspects in the TPP uncovers the "high standards" service trade liberalization mechanism establishment. American "high standards" service trade liberalization mechanism is tailored to the interests of the United States, actually services in the service of the United States. These mechanisms are through to strengthen and promote the TPP platform, forming reversed transmission to other countries. Key words: the TPP; The United States; Service trade liberalization; High standards; Mechanism design America is the first largest exporter global trade in services, and for many years, continues to service trade surplus. Competitive advantage based on service industry and service industry The importance of promoting American exports, jobs and economic growth, the United States in the multilateral, bilateral and regional multiple layers jointly promoting service trade liberalization. In the Uruguay round negotiations, the United States has overcome many obstacles, for the first time to include the Service Trade in multilateral negotiations, contributed to the general Agreement on Trade in services (the Genre - al Agreement on Trade and Service,
虹膜识别外文翻译文献 虹膜识别外文翻译文献 (文档含中英文对照即英文原文和中文翻译) 外文： The first chapter 1.1 The research background of iris recognition Biometrics is a technology for personal identification using physiological characteristics and behavior characteristics inherent in the human body. Can be used for the biological characteristics of biological recognition, fingerprint, hand type face, iris, retina, pulse, ear etc.. Behavior has the following characteristics: signature, voice, gait, etc.. Based on these characteristics, it has been the development of hand shape recognition, fingerprint recognition, facial recognition, iris recognition, signature recognition and other biometric technology, many techniques have been formed and mature to application of. Biological recognition technology in a , has a long history, the ancient Egyptians through identification of each part of the body size measure to carry out identity may be the earliest human based on the earliest history of biometrics. But the modern biological recognition technology began in twentieth Century 70 time metaphase, as biometric devices early is relatively expensive, so only a higher security level atomic test, production base.due to declining cost of microprocessor and various electronic components, precision gradually improve, control device of a biological recognition technology has been gradually applied to commerce authorized, such as access control, attendance management, management system, safety certification field etc.. All biometric technology, iris recognition is currently used as a convenient and accurate.
Lathes Lathes are machine tools designed primarily to do turning, facing and boring, Very little turning is done on other types of machine tools, and none can do it with equal facility. Because lathes also can do drilling and reaming, their versatility permits several operations to be done with a single setup of the work piece. Consequently, more lathes of various types are used in manufacturing than any other machine tool. The essential components of a lathe are the bed, headstock assembly, tailstock assembly, and the leads crew and feed rod. The bed is the backbone of a lathe. It usually is made of well normalized or aged gray or nodular cast iron and provides s heavy, rigid frame on which all the other basic components are mounted. Two sets of parallel, longitudinal ways, inner and outer, are contained on the bed, usually on the upper side. Some makers use an inverted V-shape for all four ways, whereas others utilize one inverted V and one flat way in one or both sets, They are precision-machined to assure accuracy of alignment. On most modern lathes the way are surface-hardened to resist wear and abrasion, but precaution should be taken in operating a lathe to assure that the ways are not damaged. Any inaccuracy in them usually means that the accuracy of the entire lathe is destroyed. The headstock is mounted in a foxed position on the inner ways, usually at the left end of the bed. It provides a powered means of rotating the word at various speeds . Essentially, it consists of a hollow spindle, mounted in accurate bearings, and a set of transmission gears-similar to a truck transmission—through which the spindle can be rotated at a number of speeds. Most lathes provide from 8 to 18 speeds, usually in a geometric ratio, and on modern lathes all the speeds can be obtained merely by moving from two to four levers. An increasing trend is to provide a continuously variable speed range through electrical or mechanical drives. Because the accuracy of a lathe is greatly dependent on the spindle, it is of heavy construction and mounted in heavy bearings, usually preloaded tapered roller or ball types. The spindle has a hole extending through its length, through which long bar stock can be fed. The size of maximum size of bar stock that can be machined when the material must be fed through spindle. The tailsticd assembly consists, essentially, of three parts. A lower casting fits on the inner ways of the bed and can slide longitudinally thereon, with a means for clamping the entire assembly in any desired location, An upper casting fits on the lower one and can be moved transversely upon it, on some type of keyed ways, to permit aligning the assembly is the tailstock quill. This is a hollow steel cylinder, usually about 51 to 76mm(2to 3 inches) in diameter, that can be moved several inches longitudinally in and out of the upper casting by means of a hand wheel and screw. The size of a lathe is designated by two dimensions. The first is known as the swing. This is the maximum diameter of work that can be rotated on a lathe. It is approximately twice the distance between the line connecting the lathe centers and the nearest point on the ways, The second size dimension is the maximum distance between centers. The swing thus indicates the maximum work piece diameter that can be turned in the lathe, while the distance between centers indicates the maximum length of work piece that can be mounted between centers. Engine lathes are the type most frequently used in manufacturing. They are heavy-duty machine tools with all the components described previously and have power drive for all tool movements except on the compound rest. They commonly range in size from 305 to 610 mm(12 to 24 inches)swing and from 610 to 1219 mm(24 to 48 inches) center distances, but swings up to 1270 mm(50 inches) and center distances up
旅游品牌定位外文翻译文献(文档含英文原文和中文翻译)
原文： Destination brand positions of a competitive set of near-home destinations Abstract: Although the branding literature commenced during the 1940s, the first publications related to destination branding did not emerge until half a century later. A review of 74 destination branding publications by 102 authors from the first 10 years of destination branding literature (1998–2007) found at least nine potential research gaps warranting attention by researchers. In particular, there has been a lack of research examining the extent to which brand positioning campaigns have been successful in enhancing brand equity in the manner intended in the brand identity. The purpose of this paper is to report the results of an investigation of brand equity tracking for a competitive set of destinations in Queensland, Australia between 2003 and 2007. A hierarchy of consumer-based brand equity (CBBE) provided an effective means to monitor destination brand positions over time. A key implication of the results was the finding that there was no change in brand positions for any of the five destinations over the four year period. This leads to the proposition that destination position change within a competitive set will only
中英文对照外文翻译 (文档含英文原文和中文翻译) Application Fundamentals Android applications are written in the Java programming language. The compiled Java code — along with any data and resource files required by the application — is bundled by the aapt tool into an Android package, an archive file marked by an .apk suffix. This file is the vehicle for distributing the application and installing it on mobile devices; it's the file users download to their devices. All the code in a single .apk file is considered to be one application. In many ways, each Android application lives in its own world: 1. By default, every application runs in its own Linux process. Android starts the process when any of the application's code needs to be executed, and shuts down the process when it's no longer needed and system resources are required by other applications. 2. Each process has its own virtual machine (VM), so application code runs in isolation from the code of all other applications. 3. By default, each application is assigned a unique Linux user ID. Permissions are set so that the application's files are visible only to that user and only to the application itself — although there are ways to export them to other applications as well. It's possible to arrange for two applications to share the same user ID, in which case they will be able to see each other's files. To conserve system resources, applications with the same ID can also arrange to run in the same Linux process, sharing the same
毕业论文文献综述 国际经济与贸易 中英金融服务贸易国际竞争力比较研究 金融服务贸易国际竞争力相关理论综述 服务贸易是以服务作为交易标的的一种贸易行为。《服务贸易总协定》(GATS)所界定的国际服务贸易是指以过境交付、境外消费、商业存在和自然人流动这四种形式进行的各国间的服务交易。该定义已成为有一定权威性和指导性的定义为各国接受。 根据《服务贸易总协定》中的服务部门清单，可以将服务贸易分为12类：商业性服务，销售服务，金融服务，娱乐服务，通讯服务，教育服务，卫生服务，运输服务，建筑服务，环境服务，旅游服务和其他服务。而对于金融服务贸易，国内外并没有确切的定义。本文将对金融服务贸易国外及国内有代表性的研究进行综述。 一、GATS与OECD对金融服务贸易的定义 根据GATS的定义，金融服务贸易是指由一成员国的金融服务提供者所提供的任何金融性质的服务。它包括两个部分：所有保险和保险相关的服务、银行和其他金融服务（保险除外），其中其他金融服务指证券和金融信息服务。 经济合作和发展组织（OECD）对金融服务贸易的定义为由金融机构提供服务的收入，或者接受付出的支持，包括得到的和付出的直接投资收益（未分配收益和利息）；从其他金融投资得到的和付出的收益（得到的和付出的利息和红利）；得到的、付出的手续费和佣金。 可见，经济合作和发展组织对金融服务贸易的界定强调了金融服务贸易交易的提供方，而忽略了金融服务贸易的消费方。金融服务贸易的发展主要是以此换取其他贸易领域的发展，而且金融服务贸易可以促进本国金融业与国际金融业的接轨，从而在国际竞争中促进本国金融业的发展。 二、国外对金融服务贸易相关研究 对于金融服务贸易研究，国外学者从不同角度出发，有不同的看法。 列为恩（1996）认为，各种金融服务可以实现五种基本功能：方便商品和劳务的交易；易于风险管理；加速资源流动；获取信息，评估企业和配置资本；提供公司法人治理。同时，更多的相关文献表示，金融中介可以降低由于信息不对称产生的管理成本（戴蒙德1984；威廉森1987）也可以对规模经济产生积极的效应。 莫施里安（Moshirian 1994）认为，金融服务贸易和制造业类似，一些基本要素赋予了
英文文献 Numerical control laser processing technology and application Pick to: as the main symbol of science and Technology development in the 20th century and the modern information society one of the pillars of optoelectronic Technology, Laser Technology, Laser Technology) and the development of Laser industry attaches great importance to by the advanced countries in the world. Numerical control and integrated the Laser and the optical system of the computer numerical control technology, advanced and high precision and automation of the workpiece positioning, the combination of formation, development and production of machining center has become a Laser machining, Laser Processing) is an important trend of development. Key words: CNC; Laser machining, Laser Processing); Level; application Before: laser is regarded as one of the most important scientific discoveries of the twentieth century, as soon as it was caused the great attention of materials scientists. In November 1971, gm pioneered the use of a 250 w CO2 laser to improve wear resistance materials using laser radiation test and research, and in 1974 successfully completed automobile redirector shell