电信专业英语期末试卷a及部分答案
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20 07 －20 08 学年 第 1 学期
课程名称 专业英语 试卷 卷别 A √ B □ 专业 级 班级 考试 方式 闭卷 √ 开卷 □ 本试卷共 八 大题( 6 页)，满分100分，考试时间120分钟。 请在答题纸上作答，在试卷上作答无效。 一、根据英文单词或词组，写出中文意思（本题共15小题，每题1分，共15分） 1. Semiconductor 半导体 2. amplitude 振幅 3. simultaneous 同时 4. slot 槽 5. protocol 协议 6. Bandwidth 带宽 7. Coaxial 同轴 8. Decode 解码 9. harmonic 谐波 10. Geostationary 地球静止轨道 11. flip-flop 触发器 12. uplink frequency spectrum 上行链路的频谱 13. peak-to-peak value 峰—峰值 14. home appliance 家电 15. distributed system 分布式系统
二、根据英文缩写，写出英文完整形式及中文意思（本题共5小题，每题2分，共10分）
1.ATM 自动取款机
2.WAN 广域网
3.ISDN 整体服务数位网路
4.ISO 国际标准组织
5.PCM 脉冲编码调制
三、用连线使A栏与B栏匹配（本题共2大题，每题5分，共10分）
1. Column A Column B
(1) LAN (a) an international standards organization
(2) WAN (b) a network that provides communications across country or
the entire world.
(3) host computer (c) a station which is used to receive and retransmit microwave
signals.
(4) ISO (d) a computer which is located on a network and provides
services to other nodes connected to the network.
(5) Microwave relay (e) a network that provides communications within specific
buildings or facilities.
2. Column A Column B
(1) voice channel (a) one of the typical mobile communication systems
(2) MSC (b) the medium used to carry calls from one point to another
(3) PSTN (c) radio station used within mobile communications for
transmission to mobiles or to other base stations
(4) BS (d) public network which provides dial-up(拨号)access and has
been primarily designed to carry voice
(5) CMS (e) an interface between the radio system and the PSTN, where
calls to and from the mobile subscribers are switching
四、选择适当的词或词组填空（本题共5空，每空1分，共5分）
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1. The current which flows through R L ______ (is equal to, equals to) the input voltage
U i divided by R i .
2. The switch, resistor and wire______ (are composed of, constitute) a circuit.
3. The use of mobile telephone is quite ______ (familiar with, familiar to) us in our
daily lives.
4. ATM retains(保留)all the flexibility(灵活性)of packet mode, _____(enabling,
enable) only required information _____ _ (to be conveyed, convey). 五、选择适当的词填空 （本题共5小题，每题1分，共5分） 1. The word “multimedia ” is ______ describe a mixture(混合)of hardware, software and applications. A. being used to B. used C. using to 2. The pulse is composed of _____ states. A. one B. two C. three 3. ATM transfer information ____ short packets called “cells ”(信元) _____ a fixed length of 48 bytes plus five heads bytes. A. of, in B. in, with C. to, for 4. The function of the optical detector is to ______. A. convert optical signal to electrical signal B. convert electrical signal to optical signal C. the electrical signal is applied to it 5. Each channel unit in the BS is equipped _____ radio transmitter, radio receiver, and control unit. A. in B. with C. by 六、阅读理解 （本题共5小题，每题3分，共15分） (1) Integrated Circuit Integrated circuit, or IC is a combination of a few interconnected circuit elements such as transistors, diodes, capacitors, and resistors produced in a single manufacturing process on one and the same bearing structure, called the substrate, and intended to perform definite function involved in converting information. The electrically interconnected components that make up an IC are called integrated elements. If an integrated circuit includes only one type of components, such
as only diodes or resistors, it is said to be an assembly or set of components.
The principle of integrated circuit elements lies in the following. A great number of “set” are produced simultaneously on a wafer. Each set contains all the components such as transistors, diodes, and resistor which are interconnected with short fine metallic stripes deposited on the wafer surface. They make up an functional block. Each ICs of components is a ready integrated circuit. All ICs are regularly distributed on the wafer surface.
ICs can be classified by function into two: circuits to be applied in digital systems and those to be applied in linear systems. The digital ICs are employed mostly in computers, electronic counters, frequency synthesizers and digital instruments. And the analog, or linear ICs operate over a continuous range, and include such devices as operational amplifiers.
The invention of IC is a great revolution in the electronic industry. Sharp size, weight reductions are possible with these techniques; and more importantly, high reliability, excellent functional performance, low cost and low power dissipation can be achieved.
Questions for text:
1.What types of elements may integrated circuits possibly include?
2.Tell some advantages of using integrated circuits.
(2)Pulse-Code Modulation
Pulse-Code Modulation (PCM) is the most basic form of digital pulse modulation. In pulse-code modulation, a message signal is represented by a sequence of coded pulses, which is accomplished by representing the signal in discrete form in both time and amplitude. The basic operations performed in the transmitter of PCM are sampling, quantizing, and encoding. The quantizing and encoding operations are usually performed in the same circuit, which is called analog-to-digital converter. The basic operations in the receiver are regeneration of impaired signals, decoding, and reconstruction of the train of quantized samples. In what follows, we describe the various operations that constitute a basic PCM system.
Sampling. The incoming message signal is sampled with a train of narrow rectangular pulses.
Quantization. The sampled version of the message signal is then quantized, thereby providing a new representation of the signal that is discrete in both time and amplitude.
Encoding. Any plan for representing each of this discrete set of sample values as a group of particular binary numbers is called encoding.
Regeneration. The most important feature of PCM systems lies in the ability to control the effects of distortion and noise produced by transmitting a PCM signal through a channel. This capability is accomplished by reconstructing the PCM signal by means of a chain of regenerative repeaters located
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sufficiently close spacing along the transmission route.
Decoding. The decoding process involves generating a pulse, the amplitude of
which is the linear sum of all the pulses in the code word, with each pulse being
weighted by its place value (20,21,22,…,2R-1) in the code, where R is the number of bits
per sample.
Filtering. The final operation in the receiver is to recover the message signal by passing the decoder output through a low-pass filter whose cutoff frequency is equal to the message bandwidth W. Questions for text: 1. What is “PCM” short for? 2. What are the basic operations performed in the transmitter of PCM? 3. What are the basic operations performed in the receiver of PCM? 七、将下列英文翻译成中文 （本题共12小题，每题3分，共36分） 1. We shall define voltage “across” an element as the work done in moving a unit charge (+1C) through the element from one terminal to the other. 2. The circuit designers are not generally interested in the internal components of an integrated circuit, but only in the performance of the unit as a whole. 3. A computer consists of an input/output (I/O) device, memory, a control section, and an arithmetic and logic unit (ALU), which is the computational element. 4. Because of ever more powerful computer systems and the experience of creative programmers, multimedia is truly changing the way people are using computers. 5. When a call between a mobile subscriber and an ordinary subscriber has been set up, the speech is transmitted on the radio path between the mobile station and a voice channel unit of the base station situated close to the mobile station. 6. At today’s level of development, the IC might comprise more than ten thousand separate electronic elements including elements of many different functions, such as diodes, transistors, capacitors and resistors. 7. Just as in the decimal system, every time we shift a symbol one place to the left, we multiply its value by the base 2. 8. Unlike many other threats, a computer virus can spread from program to program and from system to system, without direct human intervention(介入). 9. The fiber optic systems do not use a conventional power source and can be more easily used in hazardous(危险的)areas.
10.A multimeter is a general-purpose meter capable of measuring DC and AC voltage, current,
resistance, and in some cases, decibels(分贝).
11.This is accomplished by using a process known as demodulation, which is the reverse of the
modulation process.
12.Once the message is entirely received, the message processor examines its header, and accordingly
decides on the next outgoing channel on which to transmit it.
八、将下列中文翻译成英文（本题共2小题，每题2分，共4分）
1.网络的优势在于它能够方便快捷地传递消息。
2.键盘是最常用的输入设备。
《汽车专业英语》期末试卷附答案第2套
2、The modern automatic transmission is by far the most complicated mechanical component in today’s automobile. 3、Torque that is produced at the end of the crankshaft by the engine must be transmitted to the driving wheels. 4、A double overhead cam engine has two cams per head. So in-line engines have two cams, and V-type engines have four. 5、所以冷却系统的另一个重要作用是让发动机尽快的升温，并保持在稳定的温度范围内。 .
三、Answer the following questions in English. (3×5’) 1、Why do we need the cooling system in an IEC （内燃机）? 2、What is the function of the braking system? 3、What ’s the displacement of an engine? 四、 Choose the right answer. (5×2’) 1、What do almost all cars use to convert gasoline into motion? A. one-stroke combustion cycle B. two-stroke combustion cycle C. three-stroke combustion cycle D. four-stroke combustion cycle 2、A car uses a four-stroke engine. The four strokes are . A. intake, compression, ignition and exhaust B. injection, rotation, ignition and exhaust C. injection, carburetion, rotation and exhaust 3、What is the core of a car ’s engine?
机械专业英语词汇合集-机械人必背(字母表版)
西南交通大学2013级研究生录 V ocabulary A accessory附件，辅助设备 accordingly因此，从而 accuracy精确性 acetylene乙炔 acrylics丙烯酸树脂 acrylonitrile丙烯腈 adjusted调整过的 advent出现，到来 aligned对齐的，均衡的 aligned排列的 alloy合金 alphanumeric文字数字的，包含文字与数字的aluminum铝 ambiguously含糊不清地 amenable易控制的 amorphous无定形的，非晶态的 analogous类似的 angle角度 annealing退火 anvil铁砧 appendant下垂物 approach接近，方法，接近，靠近 arbor藤架，凉亭 argon氩气 artificial人造的 assist辅助 asymmetric不对称的 atop在顶上 attaching附属的 automatically自动的，机械的 automation自动化 automobile汽车，车辆 auxiliairy辅助的，补助的 axis轴 B bartender酒吧间男招待 batch一批，一组 beam光线 bearing轴承 binder粘合物 biomaterial生物材料
blacksmith铁匠，锻工 blade刀锋，刀口 blanking空白，下料，落料 blast爆破，冲击波 blowtorch吹管 blunt钝的 bolt螺栓 bond键，使粘合，使结合 boost推进 borer钻孔器 boring钻孔 bottleneck瓶颈 brazing硬钎焊 brittleness脆性 bronze青铜 burlap粗麻布 C calibrate校准 cam凸轮 capital首都，资本，资金，首都的，重要的cappuccino卡布奇诺，热牛奶咖啡 carbide碳化物 carburetor化油器 carburize使渗碳 carcass畜体 carriage溜板，拖板 carve雕刻 casino赌博娱乐场 cast铸造 casting铸造 catalysis催化作用 cathode阴极 cavity型腔，模腔，凸模 ceramogrophy陶瓷学 challenging复杂的 choke阻风的，气门的 chore家务杂事 chromium铬 chuck卡盘 clamp夹具，锁紧，夹紧，固定 clay泥土 clumsy笨重的，笨拙的，不灵活的 clutch离合器 coalescence合并，结合，联合
会计专业英语期末试题 )
期期末测试题 Ⅰ、Translate The Following Terms Into Chinese 、 1、entity concept 主题概念 2、depreciation折旧 3、double entry system 4、inventories 5、stable monetary unit 6、opening balance 7、current asset 8、financial report 9、prepaid expense 10、internal control 11、cash flow statement 12、cash basis 13、tangible fixed asset 14、managerial accounting 15、current liability 16、internal control 17、sales return and allowance 18、financial position 19、balance sheet 20、direct write-off method Ⅱ、Translate The Following Sentences Into Chinese 、 1、Accounting is often described as an information system、It is the system that measures business activities, processes into reports and communicates these findings to decision makers、 2、The primary users of financial information are investors and creditors、Secondary users include the public, government regulatory agencies, employees, customers, suppliers, industry groups, labor unions, other companies, and academic researchers、 3、There are two sources of assets、One is liabilities and the other is owner’s equity、Liabilities are obligations of an entity arising from past transactions or events, the settlement of which may result in the transfer or use of assets or services in the future、 资产有两个来源，一个就是负债，另一个就是所有者权益。负债就是由过去得交易或事件产生得实体得义务，其结算可能导致未来资产或服务得转让或使用。 4、Accounting elements are basic classification of accounting practices、They are essential units to present the financial position and operating result of an entity、In China, we have six groups of accounting elements、They are assets, liabilities, owner’s equity, revenue, expense and profit (income)、会计要素就是会计实践得基础分类。它们就是保护财务状况与实体经营
(完整版)机械工程专业英语词汇
陶瓷ceramics 合成纤维synthetic fibre 电化学腐蚀electrochemical corrosion 车架automotive chassis 悬架suspension 转向器redirector 变速器speed changer 板料冲压sheet metal parts 孔加工spot facing machining 车间workshop 工程技术人员engineer 气动夹紧pneuma lock 数学模型mathematical model 画法几何descriptive geometry 机械制图Mechanical drawing 投影projection 视图view 剖视图profile chart 标准件standard component 零件图part drawing 装配图assembly drawing 尺寸标注size marking 技术要求technical requirements 刚度rigidity 内力internal force 位移displacement 截面section 疲劳极限fatigue limit 断裂fracture 塑性变形plastic distortion 脆性材料brittleness material 刚度准则rigidity criterion 垫圈washer 垫片spacer 直齿圆柱齿轮straight toothed spur gear 斜齿圆柱齿轮helical-spur gear 直齿锥齿轮straight bevel gear 运动简图kinematic sketch 齿轮齿条pinion and rack 蜗杆蜗轮worm and worm gear 虚约束passive constraint 曲柄crank 摇杆racker 凸轮cams
机械专业英语词汇汇总
机械专业英语词汇（大全） 金属切削metal cutting 机床machine tool 金属工艺学technology of metals 刀具cutter 摩擦friction 联结link 传动drive/transmission 轴shaft 弹性elasticity 频率特性frequency characteristic 误差error 响应response 定位allocation 机床夹具jig 动力学dynamic 运动学kinematic 静力学static 分析力学analyse mechanics 拉伸pulling 压缩hitting 剪切shear 扭转twist 弯曲应力bending stress 强度intensity 三相交流电three-phase AC 磁路magnetic circles 变压器transformer 异步电动机asynchronous motor 几何形状geometrical 精度precision 正弦形的sinusoid 交流电路AC circuit 机械加工余量machining allowance 变形力deforming force 变形deformation 应力stress 硬度rigidity 热处理heat treatment 退火anneal 正火normalizing 脱碳decarburization 渗碳carburization 电路circuit 半导体元件semiconductor element 反馈feedback 发生器generator 直流电源DC electrical source 门电路gate circuit 逻辑代数logic algebra 外圆磨削external grinding 内圆磨削internal grinding 平面磨削plane grinding 变速箱gearbox 离合器clutch 绞孔fraising 绞刀reamer 螺纹加工thread processing 螺钉screw 铣削mill 铣刀milling cutter 功率power 工件workpiece 齿轮加工gear mechining 齿轮gear 主运动main movement 主运动方向direction of main movement 进给方向direction of feed 进给运动feed movement 合成进给运动resultant movement of feed 合成切削运动resultant movement of cutting 合成切削运动方向direction of resultant movement of cutting 切削深度cutting depth 前刀面rake face 刀尖nose of tool 前角rake angle 后角clearance angle 龙门刨削planing 主轴spindle 主轴箱headstock 卡盘chuck 加工中心machining center
机械专业英语复试词汇总结
机械英语词汇大全2 金属切削 metal cutting 机床 machine tool 金属工艺学 technology of metals 刀具 cutter 摩擦 friction 联结 link 传动 drive/transmission 轴 shaft 弹性 elasticity 频率特性 frequency characteristic 误差 error 响应 response 定位 allocation 拉孔 broaching 装配 assembling 铸造 found 流体动力学 fluid dynamics 流体力学 fluid mechanics 加工 machining 液压 hydraulic pressure 切线 tangent 机电一体化 mechanotronics mechanical-electrical integration 气压 air pressure pneumatic pressure 稳定性 stability 介质 medium 数学模型 mathematical model 画法几何 descriptive geometry 机械制图 Mechanical drawing 投影 projection 视图 view 剖视图 profile chart 标准件 standard component 零件图 part drawing 装配图 assembly drawing 尺寸标注 size marking 技术要求 technical
机床夹具 jig 动力学 dynamic 运动学 kinematic 静力学 static 分析力学 analyse mechanics 拉伸 pulling 压缩 hitting 剪切 shear 扭转 twist 弯曲应力 bending stress 强度 intensity 三相交流电 three-phase AC 磁路 magnetic circles 变压器 transformer 异步电动机 asynchronous motor 液压驱动泵 fluid clutch 液压泵 hydraulic pump 阀门 valve 失效 invalidation 强度 intensity 载荷 load 应力 stress 安全系数 safty factor 可靠性 reliability 螺纹 thread 螺旋 helix 键 spline 销 pin 滚动轴承 rolling bearing 滑动轴承 sliding bearing requirements 刚度 rigidity 内力 internal force 位移 displacement 截面 section 疲劳极限 fatigue limit 断裂 fracture 塑性变形 plastic distortion 脆性材料 brittleness material 刚度准则 rigidity criterion 垫圈 washer 垫片 spacer 直齿圆柱齿轮
环境工程专业英语期末试卷标准卷
晓庄学院期末考试试卷 （ 07 级 环境工程 专业2010 ～2011 学年度 第 一 学期） 课程名称 环境工程专业英语 A 卷 考试形式 闭卷 考核类型 考试 本试卷共 六 大题，卷面满分100分，答题时间120分钟。 一、 请根据缩写写出单词全称：（本题共5小题，每小题2分，共10分） 1. VOC ：V olatile Organic Compounds 2. APC ：Air Pollution Control 3. SS ：Suspended Solids 4. COD ：Chemical Oxygen Demand 5. EIA ： Environmental Impact Assessment （评分标准：每小题中单词全部写对，不论大小写，得2分；错一个单词得1分；错两个及以上单词，得0分。） 二、 请写出下列术语的英文表达：（本题共5小题，每小题2分，共10分） 1. 城市污水：municipal wastewater 2. 废水处理：wastewater disposal 3. 沉降池:sedimentation tank 4. 消毒:disinfection 5. 絮凝作用:flocculation
（评分标准：每小题中所用单词意思基本吻合，单词拼写正确，且单词词态正确，得2分；错一个单词得1分；错两个及以上单词，得0分。） 三、 请根据下列英文解释写出相应的英文词汇：（本题共4小题，每题2分，共10分） 1. The physical and biotic habitat which surrounds us. Environment 2. A natural gas which is formed from decaying matter and burns easily, sometimes causes explosions in mines. Methane 3. Too many people in a given area, too high a population density. Overpopulation 4. The process by which water passes through a membrane that is impermeable to dissolved ions. Osmosis 5. A kind of chemical which can speed up/down a chemical reaction rate. Catalyst （评分标准：每小题中所用单词意思基本吻合，单词拼写正确，且单词词态正确，得2分；否则得0分。） 四、阅读理解：（本题共20分，每小题2分） Passage1 A growing number of these attractions now allow customers to print e-tickets at home with large discounts off the gate price, in part to spur attendance that has declined in recent years. After boom times in the late 1990s, theme park attendance began to decrease, with an overall decline of about 4% over the past few y ears at North America’s 50 most- visited establishments, says James Zola, editor of Amusement Business. “The bloom was off the rose as we turned the corner into 2000, so there’s more discounting now,” he says.
专业英语期末试卷
ACCOUNTING ENGLISH Middle-of-term Test Papers PartⅠ.Translating the following terms 1、Notes to financial statements 2、Accounting elements 3、Variable costs 4、Economic entity 5、Depreciation expense 6、Deferred income taxes 7、Nominal accounts 8、ROA 9、LIFO 10、Work in process 11、现金收支 12、原材料 13、制造费用 14、相关性 15、持续经营 16、复式记账 17、优先股 18、预付费用 19、购货退回与折让 20、永续盘存制
PartⅡ.True or False 1、 The accounting process generates financial reports for both “internal ”and “external”users. 2、The balance sheet reflects the basic accounting equation and the means of financing the organization's assets. 3、The existence of Accounts Receivable on the Balance Sheet indicates that the company has one or more creditors. 4、Liabilities are classified and presented in increasing order of liquidity. 5、Working capital equals current assets less current liabilities. 6、Declaration of dividends reduces the retained earnings portion of the owners' equity of the corporation and creates a liabilities called Dividends Payable. 7、A chart of accounts is a listing of the titles of all accounts. 8、The cash basis of accounting often violates the matching rule. 9、Closing entries convert real and nominal accounts to zero balance. 10、The work sheet is published with the balance sheet and income statement, as a supplementary statement. 11、A company's sustainable growth rate is the highest growth rate in sales it can attain without issuing new stock. 12、Only rapidly growing firms have growth management problems.
电信专业英语期末试卷B及部分谜底
20 07 －20 08 学年 第 1 学期 课程名称 专业英语 试卷 卷别 A □ B √ 专业 级 班级 考试 方式 闭卷 √ 开卷 □ 本试卷共 八 大题( 6 页)，满分100分，考试时间120分钟。 请在答题纸上作答，在试卷上作答无效。 考 生 信 息 栏 系 专业 级 班级 姓名 学号 装 订 线一、根据英文单词或词组，写出中文意思（本题共15小题，每题1 分，共15分） 1. insulator 绝缘子 2. conductor 导体 3. pulse 脉冲 4. sensor 传感器5. manual 手册 6. modulate 调制7. nucleus 核 8. oscilloscope 示波器 9. hardware 硬件10.multimedia 多媒体 11.terminal controllers 终端控制器 12.downlink frequency spectrum 下行频谱 13.wireless telephone 无线电话 14.power cord 电源线 15.forward bias 正向偏压 、管路敷设技术通过管线不仅可以解决吊顶层配置不规范高中资料试卷问题，而且可保障各类管路习题到位。在管路敷设过程中，要加强看护关于管路高中资料试卷连接管口处理高中资料试卷弯扁度固定盒位置保护层防腐跨接地线弯曲半径标等，要求技术交底。管线敷设技术中包含线槽、管架等多项方式，为解决高中语文电气课件中管壁薄、接口不严等问题，合理利用管线敷设技术。线缆敷设原则：在分线盒处，当不同电压回路交叉时，应采用金属隔板进行隔开处理；同一线槽内强电回路须同时切断习题电源，线缆敷设完毕，要进行检查和检测处理。、电气课件中调试对全部高中资料试卷电气设备，在安装过程中以及安装结束后进行 高中资料试卷调整试验；通电检查所有设备高中资料试卷相互作用与相互关系，根据生产工艺高中资料试卷要求，对电气设备进行空载与带负荷下高中资料试卷调控试验；对设备进行调整使其在正常工况下与过度工作下都可以正常工作；对于继电保护进行整核对定值，审核与校对图纸，编写复杂设备与装置高中资料试卷调试方案，编写重要设备高中资料试卷试验方案以及系统启动方案；对整套启动过程中高中资料试卷电气设备进行调试工作并且进行过关运行高中资料试卷技术指导。对于调试过程中高中资料试卷技术问题，作为调试人员，需要在事前掌握图纸资料、设备制造厂家出具高中资料试卷试验报告与相关技术资料，并且了解现场设备高中资料试卷布置情况与有关高中资料试卷电气系统接线等情况 ，然后根据规范与规程规定，制定设备调试高中资料试卷方案。 、电气设备调试高中资料试卷技术电力保护装置调试技术，电力保护高中资料试卷配置技术是指机组在进行继电保护高中资料试卷总体配置时，需要在最大限度内来确保机组高中资料试卷安全，并且尽可能地缩小故障高中资料试卷破坏范围，或者对某些异常高中资料试卷工况进行自动处理，尤其要避免错误高中资料试卷保护装置动作，并且拒绝动作，来避免不必要高中资料试卷突然停机。因此，电力高中资料试卷保护装置调试技术，要求电力保护装置做到准确灵活。对于差动保护装置高中资料试卷调试技术是指发电机一变压器组在发生内部故障时，需要进行外部电源高中资料试卷切除从而采用高中资料试卷主要保护装置。
汽车工程专业英语》期末试卷
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专业英语期末考试试卷AB卷标准答案及评分标准
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机械工程专业英语(李光布_华中科技大学出版社)课后答案
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专业英语试题
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研究生机械工程专业英语考试必背单词
研究生机械工程专业英语考试必背单词 Modified by JACK on the afternoon of December 26, 2020
单词 Lesson 1 Gear 齿轮, 传动装置 Bearing 轴承 Cams 凸轮 Cams and followers 凸轮和从动件 Couple 力偶 mechanics 力学 statics 静力学，静止状态 dynamics动力学，原动力，动力特性constraint forces 约束力 applied forces 作用力 Electric , magnetic, and gravitational forces 电,磁,重力 mating surface 啮合表面,配合表面,接触面meshing 啮合，咬合，钩住 meshing teeth 啮合齿 journal bearing 滑动轴承，向心滑动轴承metal-to-metal contact 金属 - 金属接触Overheating 过热 failure 失效 flaking 薄片，表面剥落，压碎 Spall 削，割，剥落，脱皮 noise 噪音 rough motion运动不精确 inertia惯性 particle 质点 rigid body刚体 deformable可变形的，应变的 deformable Body 变形体 Scalar 数量的，标量的 Vectors矢量 Density密度 Mass质量 Displacement位移 Velocity速度 Acceleration加速度 Moment力矩，弯矩 Momentum动量，冲量 Lesson 2 Compressive压缩的，有压力的 Turning 车削 Rectilinear直线的 micrometer 千分尺又称螺旋测微器 Power hacksaws 弓锯床 Shaper牛头刨床 Thread 螺纹 Work：功 muscular action肌肉动作 mechanical motion机械运动 stretch an object拉伸对象 tensile force：拉力 in tension：受拉 compressive force：压力 torsional force：扭力 torque：扭矩 shearing force ：剪切力 twist an object扭曲对象 Slide滑，脱落 Slip滑动，滑移 in compression受压 turning of a part对一个零件进行车削加工wedging action:楔入作用 chip ：切屑 centers of the lathe车床的顶尖 lathe dog车床夹头 centrifugal force ：离心力 grinding wheel ：磨削砂轮 bonding agent ：粘合剂 abrasive particle：磨料颗粒 centrifuge-type machines离心式机械Centrifuge离心机，离心作用 Centrifugal force principles离心力原理centripetal force ：向心力 rotary motion:回转运动 rectilinear motion：直线运动 hand tool手工工具 power tool动力工具 feed：进给 shaping：采用牛头刨床（shaper)进行刨削加工power saw：弓锯床，弓式锯床 the screw of a micrometer 意为“千分尺中的螺杆”harmonic and intermittent motion ：谐和运动和间歇运动 simple harmonic motion ：简谐运动