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Types of Automobiles汽车的类型The automobile industry is a fast developing industry. Form the later 18th century when the first automobile was put on road, this industry has developed tremendously. Now there are thousands of factories all over the world manufacturing numerous types of automobiles. This industry employs crores of men and women directly and indirectly in allied industries. The automobile engines are also being used in engine powered machines for agriculture, construction and manufacturing processes. Various types of small engines are also being used in lawn movers, power saws, snow removers and similar equipment. The automobile industry is a developing and demanding industry which does not find its end or saturation point. There is a great demand for varied types of automotive products, vehicles and engines. There is also a great demand for trained and experienced persons in this industry for diagnosing motor vehicle troubles, repairing and replacing engines components, transmissions, propeller shafts, differentials, axles, steering system components, brake system components, suspension components, air conditioners, heaters, body and glass work.汽车产业是一个迅速发展的行业。
Chiguo Chapter 8 Section 1 Coal-Fired Power Plants燃煤发电站第一段：在化石燃料发电厂中，煤，石油或者天然气在燃烧室中燃烧，燃烧产生高温的水，然后转换成水蒸气，高温的水蒸气将驱动汽轮机，汽轮机与发电机机械地连接在一起。
图8.1展示了一个典型的图表示意图。
发电厂的运行用一下简洁的语言概述。
从仓库取出煤块放入粉煤机（或者磨粉机）中粉碎，然后与预热的空气混合，最后充入燃烧室中燃烧。
燃烧室包含一个复杂的管道，抽上的水灌输到一个叫锅炉的设备中，锅炉里面水的温度逐渐上升直至它们成为水蒸气。
水蒸气被送至汽轮机中，与此同时，燃烧的废气（烟道气体）通过物理和静电除尘装置除掉99%以上的固体颗粒（灰尘）在通过烟囱或烟囱体排放出去之前。
第二段：刚刚描述的单元，是输入煤粉，空气和水输出水蒸气的单元，这几个方面的系统被统称为蒸汽发电机组，或燃烧室，或者蒸汽发生器。
当考虑根据是燃烧过程的时候常用“燃烧室”这个术语，同时当考虑因素是水汽循环时，“蒸汽发生器”这个术语被更频繁的使用。
水蒸气的3500磅/平方英寸的典型气压和华氏零下1050度的条件，是通过控制和停止（关闭）汽轮机阀门来提供的。
整齐的热能转化为水轮机的机械能。
从排气机中排出的蒸汽在热交换器中成为冷凝器中冷却形成水，再次被泵抽回锅炉里。
通过调节蒸汽的流量变化来控制涡轮发电机的输出。
截止阀具有保护作用，它通常是完全开放的，但可以“跳闸”关闭，以防止汽轮机发电机组超速，使电力输出突然下贱（由于断路器的行动）和控制阀不关闭。
第三段：图8-1表明的是一个单阶段汽轮机，但在实际中一个更加复杂的多级排列被使用以便能实现相对较高的热效率。
一个典型的多级排列如图8-2所示。
它包括四个有着不同蒸汽气压的汽轮机机械地耦合串联在一起。
用常规的概述就是高压蒸汽来自锅炉然后进入高压汽轮机。
在之前离开高压汽轮机的水蒸气回到锅炉（再热器）地区，然后送往中压汽轮机。
1.These parts can be grouped into four major categories; body, engine, chassis and electrical system.2.The internal combustion engine is most common; this obtains its power by burning a liquid fuel inside the engine cylinder.3.The chassis includes the power train, steering, suspension, and braking systems.4. A power train can include a clutch for manual transmission or a torque converter for automatic transmission, a transmission, a drive shaft, final driveand differential gears and driving axles.5.Basic types are: leaf springs, coil springs and torsion bars.6. A basic ignition system consists of the battery, low-lension cables, the ignition coil, distributor, coil high-tension cable, spark plug cables and sparkplugs.7.The operating strokes are: induction stroke, compression stroke, power stroke, exhaust stroke.8.The major parts of engine are engine block, engine heads, pistons, connecting rods, crankshaft and valves.9.These systems are the fuel system, intake system, ignition system, cooling system, lubrication system and exhaust system.10.The dry clutch mechanism includes three basic parts: driving member, driven member and operating members.11.The spur gears are mounted on four shafts: primary shaft (input shaft), layshaft (countershaft), mainshaft, and reverse idler shaft.12.The three types of braking systems are in use today: service braking system, parking braking system and additional retarding-braking system.13.It has five basic parts: the receiver, expansion valve, evaporator, compressor, and condenser.14.The three normally adjustable angles are caster, camber, and toe.段落一．Elements of the Power TrainThe elements of the power train must meet the following requirements;1)enable driving away,2)convert torque and speed,3)enable different directions of rotation for driving forward and backward,4)transmit tractive and pushing forces,5)permit different rotational speeds of the drive wheels when cornering,6)guarantee optimum operation of the engine (or electric motor ) in terms of fuel consumption and exhaust emissions.Standstill, driving-away and power interruption are made possible by operation the clutch .During driving away, the clutch slips and bridges the difference in rotational speed between engine and power train. When different operating conditions call for a shift of gear, the clutch separates the power train during shifting.Engine torque and engine speed are converted in the transmission in accordance with the tractive-power demand of the vehicle. The transmission design is influenced by the position of the engine and driven axle. Overall conversion takes place usually in a manually shifted transmission with variable transmission ratios and in a final drive with a constant transmission ratio. Nowadays, positive-locking transmissions with toothed gears as the most important elements are of even greater significance than non-positive friction-type transmissions.Two types of toothed-gear transmission are predominant: spur-gear transmissions of the countershaft type as manually shifted transmissions, and planetary-gear transmissions as power-shift transmissions. In addition, transmissions permit the different directions of rotation required for driving forward and backward.Final drive turns the drive through 90°and reduces the speed of the drive by a set amount to the vehicle.The differential provides for the equalization of the different axle and wheel speeds when cornering and for uniform distribution of the drive torque.二.The Hydrodynamic Coupling1. Hydrodynamic CouplingConventionally, the hydrodynamic coupling, also known as the Fötttinger coupling, has an impeller and a turbine wheel with vanes that usually extend in the radial direction. The impeller is often expanded to form a housing which surrounds the turbine. Since, due to the absence of an inner ring, there is no possibility of diverting the oil flow, the turbine torque is equal to the pump torque;公式Therefore 公式The index number depends on the design, the vane angle and the degree of filling of the coupling. The main working area of an hydrodynamic coupling is at v=0.9.2. Hydrodynamic ConverterThe hydrodynamic converter, also known as the Trilok or Fötttinger converter, is capable of operating in two phases: with torque increase in the first phase, and as a hydrodynamic coupling in the second phase. The usual design has three impellers:1) The pump, which is connected to the engine, acts like a centrifugal pump to produce the flow energy of a fluid.2) The turbine, which is connected to the transmission input, converts the flow energy back into mechanical energy.3) The reactor between turbine and pump diverts the flow of the fluid.Thus, the torque output is higher than the pump torque input from the engine. The torque increaseμμ=Mt/Mp is all the higher, the greater the speed difference (slip）between the pump and turbine. Withυ=0, i.e. with the turbine braked to a standstill (stall point, drive-away point), torque conversion reaches its maximum value and falls virtually linearly with rising turbine speed to a torque ratio of 1:1 at the coupling point. Above the coupling point, the reactor, which is supported on the housing by a one-way clutch, runs, torque-free, in the flow. Thus, the converter is now a clutch without torque conversion.For automobiles, the vane geometries are such that, at the drive-away point, the maximum torque increase μA is between 2 and 2.5. The hydraulic efficiencyηhydr=υμis similar in the conversion range to the speed ratioμand reaches values around 97% at high speed.Fluid couplings form the input element of automatic transmissions (in conjunction with planetary-gear trains, clutches, brakes and one-way clutches) and also of manually shifted transmissions in the form converter and clutch unit.三．Constant-mesh TransmissionFig.3-6 illustrates the flow of torque through a typical constant-mesh transmission. This type uses helical or double helical gears which are always in mesh. The mainshaft gear wheels are mounted on bearings and when a gear is required the mainshaft gear is locked to the shaft by a dog clutch.Although the mechanical efficiency is lower the helical gears are quieter and any damage resulting from a bad gear change occurs to the dog teeth instead of the actual gear teeth.元素的力量训练动力传动的要素必须符合下列要求;1)使开车逃走,2)把转矩和速度,3)使不同方向的旋转带动向前和向后,四)推进传送叶轮力量,5)允许不同转速时的驱动轮转弯时,六)保证了优化运行的引擎(或电机)从油耗和尾气排放。
第一课谷歌上过互联网的人都见过谷歌，许多人要在互联网上查找某方面的信息时，他们都会去“谷歌”一下。
作为全世界最有名的互联网搜索引擎，谷歌是网络业界功成名就的最好范例之一。
谷歌始于1996年1月斯坦福大学博士生拉里?佩奇的一个研究项目。
为了找到一种能帮助网络用户搜索到相关网页的更好方法，佩奇设想可以通过检索网页之间的关系来实现。
他认为其他网页链接最多的那些网页一定是最受欢迎的，这项技术结果看起来是成功的。
佩奇和他的合作伙伴谢尔盖?布林于1998年9月7日创建了自己的公司，并在之后的一周注册了这一网址。
这个搜索引擎很快声名鹊起，2000年谷歌开始在自己的网站出售广告。
在投资者的热情资助下，经过几年的发展，谷歌上市了，谷歌的很多雇员一夜之间成了百万富翁。
谷歌最近收购了互联网最大的视频共享网站，而且每天都在不断增加一些新功能，如工具栏、邮件和广告。
当然，成长与成功也带来了竞争。
微软最近就试图收购雅虎以便能在互联网搜索引擎领域与谷歌抗衡。
随着公司的壮大与知名度的提高，谷歌在美国公司就业吸引力的排名也上升到第一。
他们尝试打破传统的办公室设计，努力把办公室变成员工感觉舒适、并能充分发挥自己才华的地方。
现在，谷歌已拥有YouTube、Blogger和其他一些热门网站，并且成为网络广告收入方面的领头羊。
当初两个学生的一个小点子已发展成为一家拥有十亿美元资产的大公司，谷歌也成为全球最著名的商标之一。
谷歌的发展史为当今的网络企业家树立了一个完美的典范，也提供了灵感。
第二课秘书秘书可能会有很多其他不同的头衔，例如行政助理、文员或私人助理。
尽管所有这些头衔都以行政工作为主旨，但它们却反映了不同种类的秘书工作。
秘书岗位十分古老，例如，古希腊和罗马的商人和政客们就曾雇用私人秘书和文员来管理他们的事务。
秘书的工作就是使办公室顺利运转。
秘书的职责范围很广，依据他们所在办公室的不同而各异。
就最低要求来说，秘书要处理信函，跟踪日程安排，管理文件系统，操作电话、传真机、复印机等办公设备。
Fuel Supply System of Gasoline EngineAll the gasoline engines have substantially identical fuel systems and run on a mixture consisting of fuel vapor and air. The fuel system comprises the units designed to store, clear and deliver fuel, the units intended to clean air and a unit for preparing a mixture from fuel vapor and air.In a fuel system different components are used to supply fuel from the fuel tank into the engine cylinder. Some of the important components are fuel tank, fuel pump, fuel filter, carburetor, intake manifold and fuellines or tubes connecting the tank, pump and the carburetor.The fuel tank is a fuel container used for storing fuel. It is made of sheet metal. It is attached to the vehicle frame with metal traps and is located at the rear of the vehicle. They are mounted in a boot or boot-floor pan in case of front-engined cars and small commercial vehicles. In order to strengthen the tank as well as to prevent surging of fuel when the vehicle rounds a curve of suddenly stops, baffle plates are attached to the inside of the tank.A cap is used to close the filler opening of the tank. The fuel line is attached at or near the bottom of the tank with a filtering element placed at the connection. The other components of the fuel tank are the fuel gauge sending unit, a vent pipe, receiving unit. To prevent the dirt and water from entering the luggage compartment, a sealing strip is fitted between the fuel tank and boot floor pan. Moreover to limit the transmission of frame distortion to the tank giving rise to squeaking as the metal parts get rubbed together, rubber or felt pads are often fitted between the mountings and the tank. Provision is also made against drumming of the tank by these mountings. The tank may be placed at the side of the chassis frame for convenience in case of large commercial vehicles. The length of the connecting lines or tubes from the tank to the carburetor is also restricted by this at the same time.A porous filter is attached to the outlet lines. By drawing fuel from the tank through the filter, any water in the bottom of the tank as well as any dirt into the fuel gathers on the surface of the filter. To keep the fuel always under atmospheric pressure, the filter pipe or tank is vented.In order to prevent dirt in the fuel from entering the fuel pump or carburetor, fuel filters and screens are used in the fuel system. If the dirt is not removed from the fuel, the normal operation of these units will be prevented. The engine performance will also be reduced.The filter is either fitted inside the fuel tank and pump or operates as a separate unit connected between the fuel tank and pump or between pump and carburetor into the fuel lines. Carburetors are also provided filter screens while a filter element is provided in the fuel tank.The fuel filter used is generally a sediment bowl made of glass or metal and a strainer screen. When the fuel drawn from the tank passes through the filter (through the bowl and strainer screen), particles of dirt and water settle in the bottom of the bowl. In certain vehicles, a separate filter either of the disk or ceramic type is used. It is either located between the fuel pump and carburetor or in the fuel line.For connecting the fuel tank to the fuel pump, metallic tubes or synthetic rubber hose used are called fuel lines. They are usually positioned with metallic clips along the frame side members. The tubing or fuel lines are also used to connect fuel pump to the carburetor. In order to absorb vibration as well as prevent breakage of the fuel lines, a short flexible line is used between the fuel pump and the tank.In order to meter and caution the driver of the motor vehicle about the quantity of fuel consumed and left in the tank, a fuel gauge is used. It is generally fitted on dash board for easy reading of the fuel. It is usually a balancing coil type having construction similar to that of an oil gauge. It is generally electrically operated.It consists of a sending unit mounted on the fuel tank and a receiving unit having a caliberated gauge mounted on the instrument panel.A sending unit consists of a float controlled thermostat or variable resistor. With a float and the float arm extending into the fuel tank, the whole unit is mounted on it. The level of fuel in the tank varies the position of the float. The amount of electrical resistance within the variable resistor for controlling the amount of current sent to receiving unit on the instrument panel is determined by the float position.The receiving unit mounted on the dash board indicates the amount of fuel in the tank on a caliberated gauge by the amount of current received from the sending unit.On modern automobiles, two types of fuel gauges; thermostatic type and an electromagnetic type are used.In order to prevent the rapid wear and tear of engine operating components causing reduced performance air cleaner is fitted to the carburetor air intake, it is mounted on thecarburetor air-horn for trapping dirt. Before entering the carburetor, the air must pass through it.To reduce the noise produced by the air rushing into the carburetor, a silencing chamber is built into the air cleaner. In case the engine misfires back through the carburetor, it acts as the flame arrestor.There are in general three types of the air cleaners used in modern automobiles. They are (a) oil bath cleaner (b) oil-wetted mesh air cleaner (c) dry type air cleaner. The first two are also known as heavy duty air cleaner while the third is known as light duty air cleaner.Fuel pumps are the devices used to supply fuel from the fuel tank to the carburetor. There are in general two main types of fuel pumps used in automobiles. They are main types of fuel pumps used in automobiles. They are (a) mechanical fuel pump (b) electric fuel pump.汽油发动机的燃料供给系统所有的汽油发动机具有基本相同的燃料系统和运行的燃料蒸气和空气组成的混合物中。
U 1The use of metals has always a key factor in the development of the social systems of man. Of the roughly ['rʌfl ɪ] 100 basic elements of which all matter is composed, about half are classified as metals.金属的开发利用在人类社会系统的发展中扮演了了重要的角色，世界的物质大概由100种基本元素构成，其中一半是金属元素。
The distinction[dɪ'stɪŋkʃən] between a metal and a nonmetal is not always clear cut. The most basic definition centers around the type of bonding existing between the atoms of the element, and around the characteristics [,kærəkt ə'ristiks] of certain of the electrons[ɪ'lɛk,trɑn] associated with these atoms.金属与非金属的区分不是十分的清晰，最重要（基本）的在于元素原子之间的连接形式以及和原子相关联的电子的确定特性。
in a more practical['præktikəl] way, however, a metal can be defined as an element which has a particular package of properties.然而，在更多的实践当中，金属定义为具有一种整体特性的元素。
第一单元：梦想的阴暗之面艾力克斯? 哈利许多人怀有美好的愿望，期望能成为作家，但是能够梦想成真的人不多。
艾力克斯? 哈利也想成为作家，可是他成功了。
阅读下面这篇文章，看一看他成功的原因。
许多青年人对我说，他们想成为作家。
我一直鼓励这样的人，但是我也向他们解释“成为作家”和写作之间存在着巨大的差别。
多数情况下这些年轻人梦寐以求的是财富与名誉，从未想到要孤身一人长久地坐在打字机旁。
“你们渴望的应该是写作，”我对他们说，“而不应该是当作家。
”事实上，写作是一项孤单寂寞而又收入微薄的工作。
有一个被命运之神垂青的作家，就有成千上万个永远无法实现梦想的人。
即使那些成功人士也经常受到长久的冷落，穷困不堪。
我便是其中之一。
我放弃了在海岸警卫队做了二十年的工作，为的是成为一名自由撰稿人，这时，我根本没有前途可言。
我所拥有的只是一位住在纽约市的朋友，乔治? 西姆斯，他和我是在田纳西州的赫宁一起长大的。
乔治为我找了个家，位于格林威治村公寓大楼中的一间腾空的储藏室，而他是那幢大楼的管理员。
房子里冷嗖嗖的，没有卫生间，不过这没什么。
我马上买了一台旧的手动打字机，感觉自己颇象一位名符其实的作家。
然而，大约一年后，我的写作生涯依然没有任何起色，我开始怀疑自己。
卖出一篇小说是如此艰难，以至我几乎填不饱肚子。
但是，我清楚的是我想写作，我已梦寐以求了许多年。
我并不准备成为一名到死时还在想假如的人。
我会坚持把我的梦想付诸实践--即使这梦想意味着不稳定的生活和对失败的恐惧。
这是希望的阴暗面，任何心存梦想的人都必须学会在这阴暗面下生存。
后来有一天，我接到了一个电话，由此改变了我的一生。
这并不是一位代理人或编辑打来电话，主动要求与我签大的稿约。
恰恰相反--是一声鸣笛，诱使我放弃梦想。
打电话来的是海岸警卫队的老熟人，现在在旧金山。
他曾经借给我几美元，喜欢催我还给他。
“我什么时候才能拿到那十五美元，艾力克斯？”他逗我说。
“等我下一次卖出作品吧。
枕木 sleeper轨枕 crossing平交道口 multiple unti动车组high-speed railways高速铁路 maglev磁力悬浮火车centrifugal force离心力 emergency brake handle 紧急制动手柄 metro地铁 light rail轻轨铁路commuter train通勤车tanker罐车operation 运转操作infrastructure下部构造platform站台EMU电力牵引动车组 DMU 内燃牵引动车组 cushioning减震缓冲electricity-air control电空控制antiskid防滑装置 bolster枕 rotational resistance回转阻hunting蛇行 narrow-gauge窄轨 bolster springs摇枕弹簧damper减震器阻尼器 longitudinal anti-yawing dampers纵向抗蛇行减震器disc brakes盘形制动 traction transfer device 牵引装置wheel tread brakes 踏面制动tread gradient踏面斜self-steering自导向Vehicle Suspension车辆悬挂cushion system缓冲装置vertical movement垂向振动 primary suspension一系悬挂装secondary suspension二系悬挂装置车钩 coupler 摇枕bolster乘务员crew轴箱axlebox棚车boxcar封闭车housing car保温refrigerator car牲畜车 stock car漏斗车 hopper罐车 tank car集装箱 container车体 carboy复合车 combine car邮政车 railway post office圆顶车dome转向架bogie瞭望车observation car缓冲器 draft gear行李车 baggage car卧铺车sleeping car旁承side bearer制动缸 brake cylinder侧梁 side beams横梁cross beamscrosstie敞车 gondola英译汉1. The basic design of a passenger car hasn”t changed much since themiddle of the 19th century,but there are several different passenger car types in service around the world.2. 自19世纪中期以来，客车的基本设计没有发生多大改变，但仍有不同形式的客车在全世界范围内使用。
Unit1: Translation exercises1. He has prepared answers to the questions that he expects to confront during the interview.2. His sad story touched us so deeply that we nearly cried.3、People from Shanghai can understand Suzhou dialect with ease, for Shanghai dialect and Suzhou dialect have much in common.4、Henry and his wife are looking into the possibility of buying a new house within three years.5. The two of them are walking hand in hand along the riverbank, chatting and laughing.6. When he heard the exciting news, tears of joy welled up in his eyes.7. He finally gave in to his daughter's repeated requests to further her education abroad.8. We locked all our valuables away before we went on holiday.9. Although we have parted from each other, I hope that we will remain good friends and that we will care for and help each other just as we did in the past.10. At that critical moment, the army commander summoned all the officers to work out new strategies and tactics which would make it possible to conquer the enemy.Unit2:Translation exercises1Yesterday a government delegation headed by the Minister of Foreign Affairs arrived in South Africa and began a three-day friendly visit to the country.2、It is awfully funny to look at these caricatures which satirize social ills.3、Computers are one of the most useful teaching aids,for all your lessons as well as all the questions asked and all the answers provided can be shown on a screen.4.、Xiao Zhang’s mother fell ill the day before yesterday; he sent for a doctor immediately.5、He failed in the college entrance examination last year,but he did not feeldisappointed.Instead,he continued to study hard,passed the examination successfully and become a student in famous university this year.6、There are many English words that this middle school student cannot pronounce correctly.7In this era of information explosion, we have to make constant efforts to renew our knowledge. Only thus can we become adjusted to the requirement s of our work.8With his shirt tucked into the top of his trousers and a leather bag under his arm, the boy looks just like a boss.9、Although she is only 8 years old，the little girl is already very good at calculating fractions.No wonder her parents feel proud of her.10、All the neighborhood have heard of the news,but you haven't.Don't you think it is strange?Unit31.I am sorry I am late,but I was at a meeting and couldn’t get away.2.At the concert, whenever a singer finished singing a beautiful song, the audience would burst into loud cheers to show their appreciation.3. She is always wearing stylish clothes, but seldom cares about what she eats or drinks.4.The nurse told me that the doctors had done wonders for your heart disease.5.When awarding the prize, the chairman comlimented the winner on his great contribution to mankind.6.This problem has bothered the experts for many years.7.The crowd demonstrators melted away when the police arrived.8.Since punctuality is such a good habbit,we should pay close attention to it and make every effort to cultivate it.9.The old man cherishes that girl,as if she were his own daughter.10.It is just a routine physical checkup, nothing to get worried about.Unit 4.1. 1.It is an attempt made to strengthen our competitive ability.2. 2.The police in this district know where the thieves hang out.3. 3.The agreement signed will break down all the barriers to free trade.4. 4.It was a very difficult situation,but he handled it very successfully.5. 5.He is my best friend.I just can’t turn my back on him now that he needs my help.6. 6.So long as you work hard,you are bound to succeed and realize your ambition sooner orlater.7.7.Although he hates the job,yet he is determined to stick it out because he needs the money tosupport the family.8.8.That cancer patient kept an optimistic attitude towards his disease,persisted in combatingit,and conquered it in the end.9.9.This university has a staff of more than 2000,including about 150 professors and over 500associate professors.10.10.The concert was held to mark the 75th anniversary of the composer’s death.Unit51. 1.That psychiatrist who had talked about his patients in public, was charged with violatingprofessional ethics.2. 2.Hanging on the walls of the classroom are some famous sayings,which inspire and urgepeople to exert themselves.3. 3.All kinds of commodities are available.Nothing is in short supply.4. 4.We all trust the president for his absolute integrity.5. 5.Before we vote for him, we want to know what he stands for.6. 6.The defendant couldn’t account for the fact that the money was found in his house.7.7.When I saw that he was right,I had to back down.8.8.She has been appointed sales manager,for she is both clever and diligent.9.9.One of the biggest challenges faced by the present government is that of creating more jobs.10.10.The enemy succumbed soon after our soldiers stormed its stronghold.Unit61. The dilemma she is facing is whether to tell her husband the truth about his fatal disease.2.Don’t you think it a sort of stigma that you,already in your thirties,still have to depend on your old parents?3. Almost all the governments in the world are very much concerned about the financialissue.4.With regard to the seminar on English teaching, I suggest that it be held on the comingweekend.5.whether to go abroad for further education or not is entirely up to you.6.Just a single spark can lead to an explosion in a room filled with gas.7.No matter what efforts the government has made,the price for housing has barely declined.8.In order to pass TOEFL,he has devoted almost every minute of his spare time to Englishstudies.9.With his acting potential, the young man is likely to be a superstar in the field of entertainment.10.It is believed that siblings jealousy exists more in a rich family than in a poor one.Unit71.I scrambled up the cliff for a good view of the sea.2.He lunged at the burglar and wrestled with him for the weapon.3.I figure that our national economy will continue to develop rapidly.4.The chairman made an effort to reassure the shareholders that the company’s bad resultswould not be repeated.5. Stop acting like a baby! Pull yourself together!6. Being very much a private man, he does not confide in anyone.7.We all hate the terrorists’ indiscriminate violence against ordinary people.8.Many people in this country are alarmed by the dramatic increase in violent crimes.9. We anticipated that the enemy would try to cross the river. That was why we destroyed thebridge.10. I am indebted to all the people who worked so hard to make the party a great success. Unit81.At Christmas people enjoy themselves very much;they visit one another and present each other with Christmas cards and presents.2.The walls of her bedroom and living room are all decorated with pictures of pop stars and film stars.3. Sophia teased Tom about his new hat mildly, but Tom teased her curly hair unmercifully.4.He had attained remarkable achievements which surpassed the goal he had set for himself.5. He kept crying bitterly, and I tried to persuade him not to give way to grief.6. I took it for granted that you would like to see the play, so I bought you a ticket.7.They have relegated these problems somewhere down on the priority list.8.I am going to address the letter to Donna in care of her lawyer.9. I don’t know why telling her the news brought a lump in my throat.10.Sailors signal with flags by day and with lights at night.Unit91.Towering above all others,this mountain peak commands a fine view.2.I have asked my friends to recommend a doctor who is good at treating children.3.Sophia teased Tom about his new hat mildly,but Tom teased her about her curly hair unmercifully.4. The government is determined to avoid at all costs a sharp rise in food price.5. He tried his best to save the drowning boy, but in vain.6. That old woman is always interfering in other people’s affairs.7.After having several influential papers published,he became quite distinguished in the academic world.8.Pollution is so serious in this area that the villagers can hardly find any water that is fit for drinking.9.I packed a suitcase with all the things that might be needed.10. We Chinese usually associate the Spring Festival with family reunion.Unit101.2. Many volunteers rendered a valuable service to the Beijing 2008 Olympic Games.3. The world economy is in a desperate situation, so all governments must take desperate measures to cope with.4.Scissors,knives,matches,and medicine must be kept beyond the reach of children.5.I always keep a sum of at least 1.000yuan on hand, in case of an emergency.6.Honest people despise lies and liars.7. It was a long time before I began to feel at home in English.8. Because of the financial recession, some of small- and medium-size enterprises are, so to speak,up to their necks in debt.9.He is a man that always mouths fine words about people to their faces and speaks ill of them behind their backs.10.I was greatly scared by the zest demonstrated by those radicals.Unit111.They hoped to save their marriage by giving birth to a child.2. Secret service men escorted the President and his family everywhere they went.3. The presidentia l candidate’s speech was often punctuated now and then by outbursts ofapplause from the audience.4. As soon as the news of victory came, there was great rejoicing all over the country.5.The tertiary industry in our country has been developing by leaps and bounds since the reform and opening drive started.6.The priest preached a sermon to the congregation on the need for charity.7.In order to/To maintain his dignity the employee didn’t kneel on his knees in front of theoverbearing boss.8.When the chairman announced the election results,the meeting hall broke into a sea of great joy,with the whole assembly clapping and cheering.9.He has a very bad reputation,for he often takes other people’s names in vain.10. The building of the new road has been held up by bad weather.Unit 121. I marvel at the poet’s ability to express nuances of different feelings.2.Although you have good teachers and a favorable environment,it is your personal effort that comes into play in the success of your English studies.3.As English majors,we need to have a keen awareness of the subtle diffrences between word meaning.4. Some new policies in the educational system will be implemented next year.5. It is unfair to indentify popular culture with vulgar culture.6. He believes that a person should be noble-minded, but not money-oriented all the time.7.The Middle East is generously endowed with petroleum.8.The school authorities are holding a meeting in reference to the construction of a new gymnasium.9.But for his personal visits to the third-world countries,he would not have believed such disparity in the living standars between the rich and the poor.10.No one came to claim the welfare lottery bonus of 5 million yuan RMB,not even to the last day.Unit131. The airport authorities request that every passenger keep an eye on his/her own belongings.2.Although he was diagnosed with stomach cancer,he still took an optimistic attitude toward life.3.His teacher advised him not to eat so much junk food.4. With a high sense of responsibility, the teacher gave his life in order to save his students.5.His comrades did whatever they could for his release from the prison,and they succeeded.6.The sudden financial tsunami has stripped quite a number of people of their property.7.My secretary is looking for this or that all the time,for she is always misplacing her things.8. After drifting into the woods, he was greatly amazed at the scene in front of him.9.So far no effective remedy for the addiction to the Internet has been found.10. In view of the serious employment situation, many university graduates voluntarily go and work in the remote areas.Unit141.He possesses some fine traits:he has refined and gentle manners;he is kind and generous to others;he is always modest and prudent;and he constantly perfects his work.2.A high crime rate that doesn’t seem to drop is a reflection of an unstable society.3. It is beyond doubt that Shanghai is fast becoming another financial center.4.Such a small gym can hardly meet the needs of such a large student body,amounting to about 3000.5.A person with reason instinctively knows what should be done and what should not be done.6. Despite hardships, she persisted in her efforts to complete her university education.7.As long as you study hard and make progress constantly,your chances to succeed will multiply.8. Xiao Wang works very efficiently, because he possesses strong professional competence and, moreover, he pays particular attention to the methods he employs.9. The so-called problem teens are not born to be problems. Very likely, it is because they lack parental and school discipline.10.The President of the university displays both professional competence and excellent leadership;therefore,he is very popular among the teachers and other staff members.。
第一单元发动机分类及工作原理课文A发动机的分类所有的汽车发动机都是内燃机（ICE),就是将燃油在气缸内进行燃烧，并将燃烧产生的膨胀压力转变成转动力，用来驱动汽车。
所以说，发动机是动力源, 并被认为是汽车的心脏。
汽车发动机根据工作方式分为往复式发动机和转子发动机：报据发动机燃烧的燃料分为汽油机和柴油机：根据发动机的气缸数量和气缸排列方式分为直列发动机、V型发动机、对置式发动机和W型发动机。
往复式发动机和转子发动机往复式发动机也称为活塞式发动机。
该发动机采用一个或多个活塞在气缸内上下运动或前后运动，将压力转变为转动动能传递给汽车驱动轮（见图1-1)。
往复式发动机广泛应用现代汽车上。
转子发动机是于1954年研发出来的。
如图1-2所示，在该发动机中，有个三角形的转子在燃烧室内旋转。
膨胀气体使转子旋转，产生动力并排出废气。
转子发动机没有活塞和气门等往复部件。
转子发动机产生马力大、无振动，但其燃油消耗比往复式发动机要高。
汽油机和柴油机汽油机以汽油作为燃料。
采用火花塞点燃缸内的可燃混合气，产生动力使汽车行驶，如图1-3a所示。
汽油机也称为火花点燃式发动机。
该发动机的特点是转速高，运行平顺，结构简单，重量轻，成本低。
几乎所有轿车都采用汽油机。
柴油机以柴油作为燃料。
该发动机的工作原理足通过压缩缸内的空气使其升温，冉使喷油嘴喷入的柴油燃烧，产生动力驱动汽车(见图1-3b)，所以也称为压燃式发动机。
柴油机要比汽油机的动力更强劲，燃油经济性更好。
常见于所有的大型货车、客车和部分轿车上。
直列发动机，V型发动机，水平对置式发动机，W型发动机通过气缸数最和气缸排列方式可以识别发动机结构。
当今所有的紧凑型轿车都配有4缸发动机，一些中型级轿车配有6缸发动机，大型轿车配有8缸或12缸发动机。
在多气缸发动机上，气缸通常以四种排列方式中的一种排列，有：直列式、V型、水平对置式和W型。
直列式发动机中的气缸按直线排列，采用一个气缸蓝。
几乎所有4缸发动机都采用该种排列（兄阁1-4)。
机械工程专业英语教程第一课：机械工程简介Introduction to Mechanical EngineeringSection 1: OverviewMechanical engineering is a diverse and dynamic field that encompasses the design, development, and operation of machinery, structures, and systems. This branch of engineering plays a crucial role in various industries, including automotive, aerospace, manufacturing, and energy.Section 2: Responsibilities and SkillsAs a mechanical engineer, your responsibilities will include designing and analyzing mechanical systems, conducting tests and experiments, and supervising the manufacturing process. You will also need to have a strong understanding of physics, mathematics, and computer-aided design (CAD). Additionally, problem-solving skills, attention to detail, and the ability to work well in teams are essential.Section 3: Career OpportunitiesA degree in mechanical engineering can open up a wide range of career opportunities. You could work in research and development, product design, manufacturing, or projectmanagement. Mechanical engineers are in demand in almost every industry, ensuring a stable and rewarding career path.Section 4: University CoursesTo become a mechanical engineer, it is essential to pursue a degree in mechanical engineering from a reputable university. The curriculum typically includes courses in engineering principles, materials science, thermodynamics, fluid mechanics, and mechanical design. Additionally, practical training through internships or cooperative education programs is crucial for gaining hands-on experience.Section 5: ConclusionMechanical engineering offers a challenging and rewarding career for those with a passion for solving problems and a desire to create innovative solutions. With the right education and skills, you can embark on a successful journey in the field of mechanical engineering. Remember, the possibilities are endless in this ever-evolving discipline.第二课：机械设计基础Fundamentals of Mechanical DesignSection 1: IntroductionIn this lesson, we will explore the fundamentals of mechanical design. Mechanical design involves the creation and development of physical systems and components that meet specific requirements and specifications. This processrequires a deep understanding of materials, mechanics, and engineering principles.Section 2: Design ProcessThe design process typically follows a systematic approach that includes several stages. These stages include problem identification, conceptual design, detailed design, manufacturing, and testing. Each stage involves various activities such as brainstorming, prototyping, and evaluation.Section 3: Design ConsiderationsDuring the design process, there are several important considerations to keep in mind. These include functionality, efficiency, reliability, safety, and cost-effectiveness. It is also crucial to consider the environmental impact and sustainability of the design.Section 4: Tools and SoftwareTo aid in the design process, engineers use various tools and software. Computer-aided design (CAD) software allows for precise modeling and simulation of mechanical systems. Finite element analysis (FEA) software helps in analyzing the structural integrity and performance of designs.Section 5: Case StudyTo further understand the application of mechanical design principles, we will examine a case study. This real-world example will demonstrate how the design process isimplemented to solve a specific problem and achieve desired outcomes.Section 6: ConclusionMechanical design is a critical aspect of mechanical engineering. It requires a combination of creativity, technical knowledge, and attention to detail. By mastering the fundamentals of mechanical design, you will be well-equippedto tackle complex challenges and contribute to the development of innovative solutions.以上是《机械工程专业英语教程》的课文翻译。
汽车专业英语课文翻译汽车专业英语是一门涵盖广泛的学科，它涵盖了汽车工程学、汽车设计学、汽车制造学、汽车维修学等多个领域。
学习汽车专业英语是非常有必要的，因为这是一个国际化的语言，同时也是在汽车行业工作所必要掌握的技能之一。
下面是一篇汽车专业英语课文，通过对其进行翻译，可以更好地理解其中的内容。
原文：Car Engine LubricationThe importance of lubrication in the engine of a car cannot be overemphasized. Without proper lubrication, the moving parts of anengine would grind agnst each other, causing unnecessary wear and tearon the engine and ultimately leading to its premature flure.Lubrication is accomplished by an oil pump that circulates oil throughout the engine. The oil serves as a lubricant between the moving parts, reducing friction and preventing metal-to-metal contact. The oil also acts as a cooling agent, carrying away heat generated by the engine.Oil filters are used to remove impurities from the oil, which can cause damage to the engine if not removed. Over time, the oil in an engine becomes contaminated and loses its viscosity, or thickness. It is important to regularly change the oil in a car to ensure that it continues to provide proper lubrication and cooling.Synthetic oils are becoming increasingly popular for use in car engines. Synthetic oils are engineered to provide superior lubrication and are more resistant to breaking down and losing their viscosity overtime. They also provide better protection agnst wear and tear and can improve fuel efficiency.Overall, proper lubrication is essential for the longevity and performance of a car engine. Regularly changing the oil and using high-quality synthetic oils can help to ensure that a car engine remns in top condition.译文：汽车发动机润滑汽车发动机的润滑问题不可忽视。
第一章汽车总论1)Today’s average car contains more than 15,000 separate, individual parts that must worktogether. These parts can be grouped into four major categories: body, engine, chassis and electrical equipment 。
P1现在的车辆一般都由15000多个分散、独立且相互配合的零部件组成。
这些零部件主要分为四类：车身、发动机、底盘和电气设备。
2)The engine acts as the power unit. The internal combustion engine is most common: thisobtains its power by burning a liquid fuel inside the engine cylinder. There are two types of engine: gasoline (also called a spark-ignition engine) and diesel (also called a compression-ignition engine). Both engines are called heat engines; the burning fuel generates heat which causes the gas inside the cylinder to increase its pressure and supply power to rotate a shaft connected to the power train. P3发动机作为动力设备，常见的类型是内燃机，其原理是通过发动机缸内的液体燃料燃烧而产生能量。
Unit1 奔向更加光明的未来1 下午好！作为校长，我非常自豪地欢迎你们来到这所大学。
你们所取得的成就是你们自己多年努力的结果，也是你们的父母和老师们多年努力的结果。
在这所大学里，我们承诺将使你们学有所成。
2 在欢迎你们到来的这一刻，我想起自己高中毕业时的情景，还有妈妈为我和爸爸拍的合影。
妈妈吩咐我们：“姿势自然点。
”“等一等,”爸爸说，“把我递给他闹钟的情景拍下来。
”在大学期间，那个闹钟每天早晨叫醒我。
至今它还放在我办公室的桌子上。
3 让我来告诉你们一些你们未必预料得到的事情。
你们将会怀念以前的生活习惯，怀念父母曾经提醒你们要刻苦学习、取得佳绩。
你们可能因为高中生活终于结束而喜极而泣，你们的父母也可能因为终于不用再给你们洗衣服而喜极而泣！但是要记住：未来是建立在过去扎实的基础上的。
4 对你们而言，接下来的四年将会是无与伦比的一段时光。
在这里，你们拥有丰富的资源：有来自全国各地的有趣的学生，有学识渊博又充满爱心的老师，有综合性图书馆，有完备的运动设施，还有针对不同兴趣的学生社团——从文科社团到理科社团、到社区服务等等。
你们将自由地探索、学习新科目。
你们要学着习惯点灯熬油，学着结交充满魅力的人，学着去追求新的爱好。
我想鼓励你们充分利用这一特殊的经历，并用你们的干劲和热情去收获这一机会所带来的丰硕成果。
5 有这么多课程可供选择，你可能会不知所措。
你不可能选修所有的课程，但是要尽可能体验更多的课程！大学里有很多事情可做可学，每件事情都会为你提供不同视角来审视世界。
如果我只能给你们一条选课建议的话，那就是：挑战自己！不要认为你早就了解自己对什么样的领域最感兴趣。
选择一些你从未接触过的领域的课程。
这样，你不仅会变得更加博学，而且更有可能发现一个你未曾想到的、能成就你未来的爱好。
一个绝佳的例子就是时装设计师王薇薇，她最初学的是艺术史。
随着时间的推移，王薇薇把艺术史研究和对时装的热爱结合起来，并将其转化为对设计的热情，从而使她成为全球闻名的设计师。
Types of Automobiles(UNITTWO)汽车的类型The automobile industry is a fast developing industry. Form the later 18th century when the first automobile was put on road, this industry has developed tremendously. Now there are thousands of factories all over the world manufacturing numerous types of automobiles. This industry employs crores of men and women directly and indirectly in allied industries. The automobile engines are also being used in engine powered machines for agriculture, construction and manufacturing processes. Various types of small engines are also being used in lawn movers, power saws, snow removers and similar equipment. The automobile industry is a developing and demanding industry which does not find its end or saturation point. There is a great demand for varied types of automotive products, vehicles and engines. There is also a great demand for trained and experienced persons in this industry for diagnosing motor vehicle troubles, repairing and replacing engines components, transmissions, propeller shafts, differentials, axles, steering system components, brake system components, suspension components, air conditioners, heaters, body and glass work.汽车产业是一个迅速发展的行业。
形成后18世纪当第一汽车被放在路,这个行业的发展极大。
现在有成千上万的工厂世界各地制造许多类型的汽车。
这个行业雇佣了卢比的男性和女性直接和间接地在盟军的产业。
汽车引擎也被用于发动机动力机器为农业、建筑业和制造业的过程。
各种类型的小引擎也被用于草坪搬家公司,电锯,雪消毒剂和类似的设备。
汽车行业是一个发展中国家和要求行业没有找到它的结尾或饱和点。
有大量需要不同类型的汽车产品,汽车和发动机。
还有一个巨大的需求训练和经验丰富的人在这个行业对诊断机动车麻烦、维修和更换引擎组件、变速箱、螺旋桨轴、差异、轴、转向系统组件,制动系统组件,悬挂组件、空调、热水器、身体和玻璃的工作。
There are numerous types of automobiles used in the world. There are in general three main classifications of the various types of vehicles.有许多类型的汽车在世界上使用。
一般有三种主要分类的各种类型的车辆。
The single-unit vehicles or load carriers.车辆的单件或负载运营商。
Articulated vehicles.铰接车辆。
The heavy tractor vehicles.沉重的拖拉机车辆。
Single-unit vehicles are of conventional four-wheel type. The great majority of vehicles are of two axle design, In these vehicles the front axle is a steering non-driving axle and the rear axle is the driving axle. With the passage of time, a great many changes have taken place in the number of axles and the driving arrangements.单一制车辆四轮类型的传统。
绝大多数的车辆被两个轴的设计,在这些车辆前轴是转向非驱动轴和后轴驱动轴。
随着时间的流逝,许多变化已经发生轴的数量和驾驶的安排。
In this classification, digital terms like 4×2, 4×4, 6×4etc,are commonly used. The first figure denotes the total number of wheels and the second figure the number of driving wheels.在这个分类、数字术语像4×2、4×4、6×4等,被普遍使用。
第一个图表示轮子的总数和第二个图驱动轮的数量。
A lower powered three-wheeler with a single steering wheel in front and a conventional rear driving axle is an example of articulated vehicles. It has a greater handing ability in awkward places. It can be turned about its own tail due to the three-wheel construction. The coupling mechanism between semi-tailer and tractor in most of these vehicles is arranged for automatic connection and coupling up necessitating only its reversing into the position. But for uncoupling operation, a lever is provided within the driver‟s cabin to reverse the whole process. A pair of retractable wheels in front are also provided. Along with the coupling or uncoupling operation, they can be raised or lowered automatically.一个低功率的三轮车和一个方向盘在前面,一个传统的后方驱动轴是一个例子,铰接车辆。
它有一个更大的将在尴尬的地方的能力。
它可以被关于自己的尾巴由于三轮建设。
之间的耦合机理半挂车和拖拉机在大多数这些车辆安排自动连接和耦合起来只需要其扭转到位置。
但对于解偶联操作,一个杠杆是司机的机舱内提供扭转整个过程。
一双有可以伸缩的轮子还提供前面。
随着耦合或解偶联操作,它们可以自动上调或下调。
To move heavy loads, heavy tractor or independent tractor vehicles commonly operate in pair either in tandem or as …puller‟ and …pusher‟. A special consideration is made in respect of the drive to the front wheels in all-wheel-drive vehicles. We know that the front wheels are to travel farther than the rear wheels on every band. The wind-up produced by this difference of travel over-stresses the transmission system. To avoid this a great necessity of some form of differential or its equivalent has been felt to provide it the front and rear drives. It has been seen that if the conditions are not very abnormal, sufficient amount of tyre slip taking place under running conditions would release these stresses completely.移动重物,沉重的拖拉机或独立的拖拉机车辆操作对无论是在通常为“收割机”串联或和“推进器”。
一个特殊的考虑事项是在尊重的前轮驱动的车辆四轮驱动。
我们知道,前轮是旅行的距离比后轮在每个频带。
这种差异产生的发条的旅行在强调传动系统。
为了避免这一伟大的必要性,某种形式的微分或其等效一直觉得提供它的前方和后方驱动器。
它已经看到,如果条件不太正常,足够数量的轮胎滑发生在运行情况将完全释放这些压力。
An all-wheel drive is better than the introduction of differentials between the various axles. It provides adhesion under the worst possible conditions. On the other hand, the drive to all the other axles is liable to be lost if any one axle or group of axles loses adhesion.一个全轮驱动比引入各种轴之间的差异。
