机电专业英语第2版电子教案Unit 7
机电一体化专业英语全套教学课件
长春汽车工业高等专科学校
Unit 1 Passage A
Lathe Accessories
Brass Round Stock (铜质圆料) Brass is a nice material to work with, though somewhat expensive compared with aluminum or steel. It can add a nice touch of contrasting color to a project that will be displayed. The alloy most often used for home shop work is 360.
Poor quality drills are easy to find, but they are truly a waste of money. That‘s not to say that you need to buy top quality industrial drills. It’s not always easy to tell a good drill bit from a poor one just by looking and, of course, its even harder if all you have is a picture on a web site or in a catalog. Generally, though, the lowest priced drill sets are the ones to stay away from.
机电专业英语第2版电子教案设计unit-1.doc
Unit 1 Engineering MaterialsL Lead-inIn formation related to the text:What are the basic types of engineering materials? How many types of nonmetallic are there? Do you know the differences between pure and alloyed metals? Which is often used in commercial use? Why iron is the most important natural element? What factors must be considered for the selection of production methods? In this unit, you'll learn knowledge about engineering materials. Now, let's study key words and phrases together.II.Word Study1.differ ['difo] vt.使…相异；使…不同vi.相异；意见分歧(from, in)1)agree to differ同意各持己见2)Our lifestyle, education and other systems differ from other places in the region.本地的生活方式、教育制度等与其他地区有所不同。
3)They differ in kind and function.它们种类不同、功能不同。
2.be classified as被归类为…1)Gold alloy can be classified as white gold alloy and color gold alloy by color. 金合金按照颜色分主要有白色金合金和彩色金合金两种。
机电英语Unit 7
Unit 7 Operational & Technical Management
Reading A
PDM System and Mold Design
Product Data Management (PDM) system, a computer-based system which electronically maintains the organizational data, promises mold makers efficient data management and helps them to save time, control costs and ensure quality. The following tips will help mold makers learn how PDM can meet
Unit 7 Operational & Technical Management
Reading A
Task 2 Read the passage. Match each function of a PDM
system in the left column with the thing(s) it can achieve in the right column. automating workflow
机电专业英语全书电子教案教学设计
机电专业英语全书电子教案完整版教学设计第一章：机电专业英语概述1.1 课程简介1.2 学习目标1.3 教学内容1.3.1 专业英语的重要性和应用领域1.3.2 机电专业英语的基本词汇和语法1.4 教学方法1.4.1 课堂讲解1.4.2 案例分析1.4.3 互动讨论1.5 作业与评估1.5.1 课后作业1.5.2 课堂参与度评估第二章：机电专业英语词汇与短语2.1 学习目标2.2 教学内容2.2.1 机电专业常用词汇2.2.2 相关短语和表达方式2.3 教学方法2.3.1 词汇讲解2.3.2 实例演示2.3.3 小组活动2.4 作业与评估2.4.1 词汇练习2.4.2 小组活动报告第三章：机电专业英语阅读理解3.1 学习目标3.2 教学内容3.2.1 机电专业英语文章阅读3.2.2 提高阅读理解能力3.3 教学方法3.3.1 阅读技巧讲解3.3.2 文章讨论3.3.3 练习题解答3.4 作业与评估3.4.1 阅读练习3.4.2 阅读理解测试第四章：机电专业英语听力理解4.1 学习目标4.2 教学内容4.2.1 机电专业英语听力材料4.2.2 提高听力理解能力4.3 教学方法4.3.1 听力技巧讲解4.3.2 听力练习4.3.3 听力材料讨论4.4 作业与评估4.4.1 听力练习4.4.2 听力测试第五章：机电专业英语写作与口语表达5.1 学习目标5.2 教学内容5.2.1 机电专业英语写作技巧5.2.2 机电专业英语口语表达技巧5.3 教学方法5.3.1 写作技巧讲解5.3.2 口语表达练习5.3.3 角色扮演5.4 作业与评估5.4.1 写作练习5.4.2 口语表达评估第六章：机械工程领域的英语应用6.1 学习目标6.2 教学内容6.2.1 机械工程领域常用英语词汇和短语6.2.2 机械工程领域英语文献阅读和理解6.3 教学方法6.3.1 实例分析6.3.2 小组讨论6.3.3 英语报告6.4 作业与评估6.4.1 文献阅读6.4.2 小组项目第七章：电子工程领域的英语应用7.1 学习目标7.2 教学内容7.2.1 电子工程领域常用英语词汇和短语7.2.2 电子工程领域英语文献阅读和理解7.3 教学方法7.3.1 实例分析7.3.2 小组讨论7.3.3 英语报告7.4 作业与评估7.4.1 文献阅读7.4.2 小组项目第八章：机电设备说明书翻译8.1 学习目标8.2 教学内容8.2.1 机电设备说明书结构及内容8.2.2 翻译技巧与策略8.3 教学方法8.3.1 实例讲解8.3.2 翻译练习8.3.3 学生翻译展示与讨论8.4 作业与评估8.4.1 翻译练习8.4.2 翻译质量评估第九章：机电专业英语口译技巧9.1 学习目标9.2 教学内容9.2.1 机电专业英语口译基本概念9.2.2 口译技巧与实践9.3 教学方法9.3.1 理论讲解9.3.2 角色扮演与模拟口译9.3.3 反馈与改进9.4 作业与评估9.4.1 口译练习9.4.2 口译能力评估第十章：机电专业英语综合应用10.1 学习目标10.2 教学内容10.2.1 机电专业英语案例分析10.2.2 综合应用能力的培养10.3 教学方法10.3.1 案例研究10.3.2 小组合作项目10.3.3 学生展示与讨论10.4 作业与评估10.4.1 案例分析报告10.4.2 小组项目评估重点和难点解析一、机电专业英语概述重点环节：1.3.2 机电专业英语的基本词汇和语法补充和说明：此环节需重点关注机电专业英语的基本词汇和语法结构，因为这是理解后续专业知识的基础。
机电专业英语第2版电子教案Unit2
机电专业英语第2版电子教案Unit2第一篇：机电专业英语第2版电子教案Unit 2Unit 2 Machine Elements I.Lead in Information related to the text Do you know what is referred to as a machine element? Which elements are associated in pairs? Can you give an example? What is the most common machine element? How can the supporting structure be assembled? Why does the individual reliability of machine elements become the basis for estimating the overall life expectancy of a machine? Maybe you have seen and you are much interested in some machine elements, of course also interested in these questions.In this unit, you’ll learn some machine elements and know how they are widely used in industry.Now, let’s study new words and phr ases together.II.Word Study 1.individual [,indi'vidjuəl] adj.个别的n.个人,个体 1）These styles can be adapted to suit individual tastes.这些式样均可改动以适应个人不同的爱好.2）Who was the individual champion? 谁是个人项目的冠军？3）Am I a Business or Individual account? 我采用企业帐户还是个人帐户？ 2.disma ntle [dis'mæntl] v.拆除．．．的设备, 分解1）To dismantle or raze;tear down.拆除，毁坏：拆除，摧毁；拆毁 2）Before mounting, You can not dismantle the plug of port in case the dirty entering.装机前不得将各油口堵塞拆掉，以防脏物进入。
机电专业英语教案
A:Do you remember what EMF is?
B: It's short for electromotive force.
A: Pardon me? Would you explain it in detail?
B: I'm sorry. I have no time right now. Look it up in the next, I believe you will find the answer.
教学时间：
教学班级：
教学内容：
I.专业词汇
resistance阻力，电阻impede阻力，阻碍
represent描绘，代表ohm欧姆
element要素，元件resistor电阻器
thermistor热敏电阻diode二极管
series串联parallel并联
die渴望，死亡in unit of以...为单位
4. The formula I= , where I means current in amperes.
IV.对话
A: Excuse me, Peter?
B: Yes, Roger?
A: Could you tell me the unit of current?
B: Sure, the unit of current is ampere.
B: Well, a network can be regarded as a combination of more than one circuit.
A: Oh, I think I got it. Thanks.B: You're welcome.
作 业
会读认知新的专业词汇和术语。
机电专业英语(第2版)教学指南(中等职业学校教学用书)
中等职业学校教学用书（机电技术专业）
机电专业英语（第2版）
教学指南
杨春生主编
Publishing House of Electronics Industry
北京•BEIJING
前言
为了配合《机电专业英语（第2版）》课程的教学，体现教材的编写特色，更好地为读者服务，编写了此教学资料。
教学资料内容有三个部分：第一部分是教学指南，包括了课程性质与任务、课程教学目标和教学时间分配。
第二部分是教材补充资料。
教师可以根据不同的教学要求按需选取和重新组合。
第三部分是习题答案，给出了每道习题的解答过程。
限于编著者水平，教学资料中有错误或不妥之处，请读者给予批评指正。
编者
2008年11月
《机电专业英语（第2版）》教学指南
一、课程性质和任务
本课程是一门延续公共英语的专门课。
其任务是增加学生的专业词汇量，提高学生理解和翻译机电类英文专业资料的能力，扩大学生的专业知识面。
二、课程教学目标
１．具有400~500的专业词汇量
２．掌握基本语法知识，具有笔译本专业英文资料的初步能力
３．具有用英语与外国工程技术人员进行简单技术交流的能力
４．具有读懂机电设备的英文操作手册的能力
５．具有用英语自荐和填写各类英文表格的基本能力
三、课时分配表
注：各学校的专业英语课时有所差别，一般在32学时左右，制定授课计划时教师可根据不同专业对各模块的课进行选择组合，每课按2学时计。
机电一体化专业英语教案
《机电一体化专业英语》（English for Mechatronics）授课教案Teaching PlanMajor (专业)：机电一体化XXXX专业（相关专业）Lecturer(任课教师)：__________________________Mechatronics SectionChangchun Automobile Industry Institute《机电一体化专业英语》授课计划_ _______ 学院___ 专业班20 －20 学年第学期授课时间：第周ensure that…又引导出一个状语从句。
全句可译为：在把花盘安装在主轴上后, 常规作法是对断面进行一次性地轻切削以确保花盘表面与车床主轴垂直。
Period1The following is the machine tool structures.Explanations of the Machine Tool TermsNo.NameExplanation1 Spindle speed selector 主轴速度转换开关2 Headstock assembly 主轴箱3 Spindle with chuck 附有夹具主轴 4Tool post 刀架 5 pound rest 复式刀架 6 Cross slide 横向拖板 7 Carriage 滑鞍,滑座 8 Ways 导轨 9 Dead center 死顶尖 10 Tailstock quill 尾架顶尖套筒 11 Tailstock assembly 尾架 12 Hand-wheel 手轮 13 Bed 底座,床身 14 Lead screw 丝杠 15 Feed rod 进刀杠,光杠 16 Clutch离合器17 Longitudinal & transverse feed control 纵向与横向进给控制 18 Split-nut control 开合螺母控制 19 Apron 溜板箱,进给箱 20 Chip pan 承屑盘 21Feed selector进给选择开关机床构造 Section II Glance at Machine Tool StructuresThe following is the conventional machine tool. You are required to choose the suitable words or phrases given below.7. Body G. 公英制转换键8. Calibration sticker H. 液晶显示屏9. Depth bar I. 外径测量面10. Zero-setting key J. 滑尺11. On/Off key K. 电池盖12. Slider L. 清零键13. Outside measuring face M. 测深杆Period 1Practice扩大您地视野（实践部分）Section IV BroadenYour Horizon—Practical Activity(Practice) The micrometer screw gaugeThe micrometer screw gauge is used to measure even smaller dimensions than the vernier caliper. The micrometer screw gauge also uses an auxiliary scale (measuring hundredths of a millimeter) which is marked on a rotary thimble. Basically it is a screw with an accurately constant pitch. The micrometers in our laboratory have a pitch of 0.50 mm. The rotating thimble is subdivided into 50 equal divisions. The thimble passes through a frame that carries a millimetre scale graduated to 0.5 mm. The jaws can be adjusted by rotating the thimble using the small ratchet knob. The thimble must be rotated through two revolutions to open the jaws by 1 mm. Here is a useful applet to learn how to use the micrometer screw gauge (Figure 1-19).Figure 1-19 The micrometer screw gaugeIn order to measure an object, the object is placed between the jaws and the thimble is rotated using the ratchet until the object is secured. Note that the ratchet knob must be used to secure the object firmly between the jaws, otherwise the instrument could be damaged or give an inconsistent reading.Note that an additional half scale division (0.5 mm) must be included if the mark below the main scale is visible between the thimble and the main scale division on the sleeve. The remaining two significant figures (hundredths of a millimeter) are taken directly from the thimble opposite the main scale.In Figure 1-20 the last graduation visible to the left of the thimble is 7 mm and the thimble lines up with the main scale at 38 hundredths of a millimeter (0.38 mm); therefore the reading is 7.38 mm.In Figure 1-21 the last graduation visible to the left of the thimble is 7.5 mm; therefore the reading is 7.5 mm plus the thimble reading of 0.22 mm, giving 7.72 mm.Figure 1-20 The reading is 7.38mm Figure 1-21 The reading is 7.27mm In Figure 1-22 the main scale reading is 3 mm while the reading on the drum is 0.46 mm; therefore, the reading is 3.46 mm.In Figure 1-23 the 0.5 mm division is visible below the main scale; therefore the reading is 3.5 mm + 0.06 mm = 3.56 mm.Figure 1-22 The reading is 3.46mm Figure 1-23 The reading is 3.56mm Try the following bg yourselfFigure 1-24 Figure 1-25 Figure 1-26A: Do exercise 1, 2, 3, 4 and 7.AssignmentB: Ask students to collect some external machine tools.《机电一体化专业英语》授课计划_ _______ 学院___ 专业班20 －20 学年第学期授课时间：第周Key Points unit.2. Machine tool practice cognition.教学难点Difficult Points 1. Understand the key words, phrases and sentences in the passage.2. Translate the simple material or specification.教学方法Teaching Methods • Explanation • Group discussion • Questions and answers • Performance (Role-play) • Machine tool specification教学手段TeachingMeans• Multi-media • Videos • work Resource教学安排Teaching Arrangement教学内容Contents of Course学时Period精读Section I Technical and Practical Reading2机床构造Section II Glance at the Structure of the Machine Tool1试试身手（实践部分）Section III Simulated Writing (Practice)2扩大您地视野（实践部分）Section IV Broaden Your Horizon—Practical Activity (Practice)1授课内容与要点Teaching Contents and Main PointsUnit 2 Metal MaterialsPeriod2精读Section I Technical and Practical Reading Part I. Leading in1. RevisionAsk several students if they know the machine tool structures, metal materials and important machine tool manufacturers.Arouse students to answer teacher’s questions according to the Passage A /B for introduction to meta materials in Unit 2.2. Warming up questions1) Ask students to work in groups of four to read new words and phrases.5. ________（工具铣床）6. ________ (单柱铣床)Single-column Milling Machine Plano-milling MachineTool Milling MachineKnee-and-Column Milling Instrument milling machine Single-arm Milling MachinePeriod2Have a TrySample 1Explanations of TermsNameExplanationOuter frame 外框 Scale mark plate刻度盘 Spring 弹簧 Arm测量臂 Gauge head 侧头 Dial window 刻度盘 Indicator 指针 Clamp screw夹紧螺丝Choose the best answer.试试身手 （实践部分） Section III Simulated Writing (Practice)AB1. Dial windowA. 限制器 2. Long handB. 短指针 3. Top pointC. 刻度盘 4. LimiterD. 刻度盘 5. ClumpE. 长指针 6. Outer frameF. 底座 7. Short handG. 顶针8. BaseH. 螺丝紧固座 9. Scale mark plate I. 紧固件 10. Screw fastening base J. 测头 11.Gauge headK. 外框Period1Practice扩大您地视野 （实践部分）Section IV BroadenFacing OperationsFacing is the process of removing metal from the end of a work-piece to produce a flat surface.Preparing for the Facing CutYour Horizon—Practical Activity (Practice) First, make sure the tumbler gear lever on the back of the headstock is in the neutral (middle) position so that the lead-screw does not rotate.Clamp the work-piece tightly in the three-jaw chuck. To get the work properly centered, close the jaws until they just touch the surface of the work, then rotate the work-piece by hand in the jaws to seat it; then tighten the jaws (Figure 2-17). Beginning the Facing CutUse the pound handwheel to advance the tip of the tool until it just touches the end of the work-piece. Use the cross feed crank to back off the tool until it is beyond the diameter of the work-piece. Turn the lathe on and adjust the speed to a few hundred RPM — setting of the speed control knob. Now slowly advance the cross feed hand-wheel to move the tool towards the work-piece. When the tool touches the work-piece it should start to remove metal from the end (Figure 2-18). Continue advancing the tool until it reaches the center of the work-piece and then crank the tool back in the opposite direction (towards you) until it is back past the edge of the work-piece (Figure 2-19).Figure 2-18 Figure 2-19 Since we started with the tool just touching the end of the work-piece, you probably removed very little metal on this pass. This is a good idea until you get used to how aggressively you can remove metal without stalling the lathe.The Roughing CutUse the pound crank to advance the tool towards the chuck about 0.010". If the pound is set at a 90 degrees to the cross slide (which is how I usually set mine) then each division you turn the crank will advance the tool 0.001 (one-thousandth of an inch) toward the chuck.If the pound is set at some other angle, say 30 degrees, to the cross slide, then it will advance the tool less than 0.001 for each division. The exact amount is determined by the trigonometric sine of the angle. Here’s a picture of the first pass of a facing operation (Figure 2-20).Cutting on the Return PassIf you crank the tool back towards you after it reaches the center of the work-piece you will notice that it removes a small amount of metal on the return pass. This is because the surface is not perfectly smooth and it is removing metal from the high spots. If you need to remove a lot of metal, to reduce the work-piece to a specific length, for example, you can take advantage of this return cut to remove more metal on each pass by advancing the tool a small ways into the work-piece on the return pass. Since the tool must plunge into the face of the work-piece, this works best with a fairly sharp pointed tool.The Finishing CutDepending on how rough the end of the work-piece was to begin with and how large the diameter is, you may need to make three or more passes to get a nice smooth finish across the face. These initial passes are called roughing passes and remove a relatively large amount of metal.When you get the face pretty smooth you can make a final finishing cut to remove just 0.001 to 0.003" of metal and get a nice smooth surface. Figure 2-21 shows removingabout 0.002" of metal at around 1 000 RPM. Figure 2-22 shows the finished face of thework-piece. Figure 2-21 Figure 2-22Figure 2-23 shows what happens if the tip of your cutting tool is below the center line of the lathe — a little nub is left at the center of the work-piece. The same thing happens ifthe tool is too high but the nub will have more of a cone shape in that case. If the tool is toolow, place a suitable thickness of shim stock underneath the tool in the tool holder. If it’s toohigh, grind the top down a few thous.Filing the EdgeFacing operations leave a rather sharp edge on the end of the work-piece. It’s a good idea to smooth this edge down with a file to give it a nice chamfer and to avoid cuttingyourself on it. With the lathe running at fairly low speed, bring a smooth cut file up to theend of the work-piece at a 45 degree angle and apply a little pressure to the file. Figure2-24: Right — left hand holding tang end of file. Figure 2-25: Wrong — left hand reachingover spinning chuck!Figure 2-23 Figure 2-24Figure 2-26 shows the finished surface and beveled edge. This is what a good facing cut should look like: smooth even surface with no raised bump in the center. Lay anaccurate straight edge across the surface of the face and you should not be able to seeany light under the edge. If you detect a slight convex shape, the carriage may be movingback away from the headstock during the cut.Figure 2-25 Figure 2-26A: Do exercise 1, 2, 3, 4 and 7.AssignmentB: Ask students to collect some external machine tools.《机电一体化专业英语》授课计划_ _______ 学院___ 专业班20 －20 学年第学期授课时间：第周教学难点Difficult Points 1. Understand the key words, phrases and sentences in the passage.2. Translate the simple material or specification.教学方法Teaching Methods • Explanation • Group discussion • Questions and answers • Performance (Role-play) • Machine tool specification教学手段TeachingMeans• Multi-media • Videos • work Resource教学安排Teaching Arrangement教学内容Contents of Course学时Period精读Section I Technical and Practical Reading2机床构造Section II Glance at the Machine Tool Structures1试试身手（实践部分）Section III Simulated Writing (Practice)2听说练习（实践部分）Section IV Broaden Your Horizon—Practical Activity (Practice)1授课内容与要点Teaching Contents and Main PointsUnit 3 Machining OperationsPeriod2精读Section I Technical and Practical Reading Part I. Leading in1. RevisionAsk several students if they know the basic machine tool and its function.Arouse students to answer teacher’s questions according to the Passage A /B for introduction to basic machine tools in Unit 3.2. Warming up questions1) Ask students to work in groups of four to read new words and phrases.2) Talk about the basic boring machines.Part II. prehension and PracticingSentences:1. Conventional machining, one of the most important material removal methods, is a collection of material-working processes in which power-driven machine tools, such as lathes, milling machines, and drill presses are used with a sharp cutting tool to mechanically cut the material to achieve the desired geometry. 在这个长句中,主语是Conventional machining,由is引导出合成谓语;one of the most…methods是插入语;in which 引导定语从句,其先行词为processes。
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Unit 7 The Injection Molding and MachineI. Lead inInformation related to the textDo you know what is called an injection molding machine? Can you give an example of it? What does it work? In this unit you will learn some the Injection Molding and Machine concept, how it is wide application. Now, let's learn new words and phrases.II. Word Study1. inject [in'dʒekt]vt.注射，注入injection n.注射，投资，注射剂1）A sterile applicator is used to inject the microchip just under the skin.一个消过毒的涂药器被注射进微型芯片在表皮之下。
2）Major banks around the world are joining forces to inject as much as 180 billion dollars into global money markets.全世界的主要银行都加入了抵制注入180亿美元到全球的经济市场中的行动。
3）Fire ants get their name because when they sting, they inject poison into the skin that causes a feeling of intense burning. Some people sufferlife-threatening reactions.火蚁因当他们叮住目标时会将一种能导致灼热感的有毒物质注入皮肤而得名。
有些还会有生命危险的反应。
4）There would be no need for injection, since the vaccine would be taken by mouth.通过口服疫苗，我们就不需要注射了。
2. melt [melt] vt. 使软化，使融化，使熔化，使感动1）This element is of proper shape and cross-section to carry rated current continuously and to melt in accordance with a specific time-current characteristic on heavy overload or short circuit.此可熔断元件恰当的形状和横截面使其可连续通过额定电流，而对于严重过负荷或短路，按规定的时间一电流特性而熔断。
2）Either it exposes land, which then warms up; or it forms ponds (or lakes or streams) of meltwater on the surface of the ice, which absorb energy and melt more ice.融冰过程要么导致陆地暴露并且温度升高，要么在冰层表面形成池塘（或湖泊，或溪流），并吸收能量，融化更多的冰。
3）Her money seemed to melt away in Paris.在巴黎她的钱似乎自行消失了。
4）If fast growth and urbanization continue, some overcapacity will melt away.如果高速增长和城市化进程得以持续，部分产能过剩将得到消化。
3. powdered ['paudəd] adj. 粉状的, 变成粉末的,涂粉的1）The ground was lightly powdered with snow.地上薄薄地铺了一层雪。
2）If you combine powdered milk and water, you get liquid milk.把奶粉和水合在一起就成了牛奶。
3）Ceramic elements are made by pressing and sintering finely powdered materials.陶瓷元件是将仔细研磨的材料经过加压和烧结制成。
4）The sweet scented orris root, is the powdered root of the Florentine iris, which was grown in ancient Greek and Roman gardens.有香甜味的鸢尾根是佛罗伦萨鸢尾有许多小斑点的根，这种鸢尾长在古希腊和罗马花园里。
4. hopper ['hɔpə] n.斗；单足跳者；跳虫；漏斗1）Raise hopper feeding inlet size and height.加高投料口尺寸及投料高度。
2）Flexible tube used to convey either powder from hopper to gun or compressed air to gun.把粉末从粉桶输送到喷枪或把压缩空气输送到喷枪的柔性管子。
3）Automatic material loading ty using vacuum blower and material hopper with photo electrical material level sensor.配备电眼料斗与送料风机，能自动上料。
4）When the students left the examination room, they jotted down these questions quickly from memory and put them into the fraternity hopper.学生离开考场后，凭记忆迅速将这些问题写下来，然后存入联谊会的议案箱。
5. screw [skru:] vt.旋，拧；压榨；强迫n..螺丝钉；螺旋vi. 转动，拧1）Can you work the screw loose?你能使这个螺钉松开吗？2）John must have a screw loose to quit such a good job.约翰辞掉这么好的工作，一定是神经不正常。
3）This eyelet is so small that even the smallest screw cannot pass through.这个孔眼太小了，最小的螺丝钉都穿不过去。
4）He is an old screw. You will never be able to make him give out one dollar.他是个老守财奴，你不可能令他交出一元一分。
6. shear [ʃiə] vt. 修剪，剪；剥夺n. 切变；修剪；大剪刀1）In fluids, forces of tension and shear can often be ignored.在流体中，张力和切力通常可以忽略不计。
2）How long does it take to shear a sheep?给一只羊剃毛要花多久时间？3）Because you already are I this life forever are unable to shear the shed worrying.因为你已是我今生永远无法割舍的牵挂。
4）Textbooks commonly denote shear stresses by the symbol and two subscripts.教科书通常用符号和两个脚标表示剪应力。
7. hydraulic [hai'drɔ:lik] adj. 液压的, 水压的, 水力的；水力学的1）The hydraulic shock damper is commonly used to reduce the vehicular vibration.液压减振器一般用来衰减车辆的振动。
2）The paper presents a new structure of honing internal_ hole of hydraulic prop on general lathe.介绍一种在普通车床上珩磨液压支柱内孔的新结构。
3）The Brake system can be divided into two principal parts, hydraulic system and wheel Brake assemblies.制动系统可以分为两个基本部分：液压系统和车轮制动总成。
4）Solenoid valve is a basic component in automatic flow control, it is actuator but not limited to hydraulic, pneumatic.电磁阀是用来控制流体的自动化基础元件，属于执行器；并不限于液压，气动。
8. polymerize ['pɔliməraiz] vt. (使)聚合1）Polymerize together, of two substances.两种物质共同聚合在一起。
2）Of spill or leak: flood with water to polymerize.产品外溅或泄露的措施：用水冲使其聚合。
3）"Polymerize life energy; Cherish being health" is the eternal management idea in the enterprise.“聚合生命能量，呵护人类健康”是我们永恒的经营理念；4）In this paper, polymerization of maleic anhydride which is difficult to polymerize in normal condition was studied by means of microwave radiation.将微波辐射用于一般情况下难以聚合的马来酸酐的聚合，采用家用微波炉进行微波辐射。
III．Language points1. Injection molding is principally used for the production of the thermoplastic parts, although some progress has been made in developing a method for injection molding some thermosetting materials.译文：尽管注塑成型某些热固性塑料的方法取得了一定进步, 但注塑成型主要(还是)用来生产热塑性塑料制件。