机电专业英语第2版电子教案unit 3

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机电一体化专业英语全套教学课件

机电一体化专业英语全套教学课件
When using a faceplate, always ensure that the work is securely clamped down and balanced by some offsetting piece of metal, if necessary. (Figure 1-7)
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.

机电工程专业英语教案

机电工程专业英语教案
Content:RelativeknowledgeofWelding
Intension: Master new words, understandthe relative knowledge ofWelding
教学重点
教学难点
Keystone:RelativeknowledgeofWelding
Difficulty: Text comprehension
教学重点
教学难点
Keystone:RelativeknowledgeofCNC System
Difficulty: Text comprehension
使用教具
Multimedia
课外作业
Exerciseandtranslation
备注
无锡职业技术学院
教案
教师姓名
王芳琴
授课形式
讲授
授课时数
2
授课日期
and function of lathes
Intension: Master new words, understandthe relative knowledge ofconfiguration and function of lathes
教学重点
教学难点
Keystone:Relativeknowledgeofconfiguration
教学重点
教学难点
Keystone:RelativeknowledgeofCNC and NC
Difficulty: Text comprehension
使用教具
Multimedia
课外作业
Exerciseandtranslation
备注
无锡职业技术学院
教案

机电专业英语第2版电子教案设计unit-1.doc

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。

机电专业英语第2版3Unit 3 Machine Tools 机床教材

机电专业英语第2版3Unit 3 Machine Tools 机床教材

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Text 机电专业英语徐存善主编
Drilling
Drilling is performed with a rotating tool called a drill. Most drilling in metal is done with a twist drill. The machine used for drilling is called a drill press. Operations, such as reaming and tapping, are also classified as drilling. Reaming consists of removing a small amount of metal from a hole already drilled. Tapping is the process of cutting a thread inside a hole so that a cap screw or bolt may be threaded into it.
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Text 机电专业英语徐存善主编
Turning and Boring
The lathe is commonly called the father of the entire machine tool family. For turning operations, the lathe uses a single-point cutting tool, which removes metal as it travels past the revolving workpiece. Turning operations are required to make many different cylindrical shapes, such as axes, gear blanks, pulleys, and threaded shafts. Boring operations are performed to enlarge, finish, and accurately locate holes.

机电专业英语教学课件Unit 3 Can You Follow These Directions

机电专业英语教学课件Unit 3 Can You Follow These Directions
1. This symbol indicates that lethal accidents or serious injuries may occur if the operating and working instructions are not followed properly.
2. This symbol warns against dangerous voltage! Immediate death might be the consequence.
2. This symbol warns against dangerous voltage! Immediate death might be the consequence.
Part IV Task-driven Practice
【引导文1】Common Symbols & Their Indications(车间常见警示 标志及含义)
Part III Reading One
Sample hazard inspection checklist (危险检测清单样本) (1)Floors-地板 (2)aisles-过道 (3)Fire-火源 (4)General lighting-照明 (5)Windows-窗户
Part III Reading One
Part III Reading One
Make inferences 9. oxidizing agent氧化剂 10. organic peroxide有机过氧化物 11. toxic有毒物 12. radioactive放射性物质 13. miscellaneous dangerous goods 有害危险物品
5. lower
6. regularly

专业英语课件Unit 3

专业英语课件Unit 3


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Language points
机电专业英语徐存善主编
2. For turning operations, the lathe uses a single-point cutting tool, which removes metal as it travels past the revolving workpiece. 译文:在车削操作中,车床用一个单刃切削刀具在旋转的工件上 进行金属切削。 说明:句中句中which removes metal as it travels past the revolving workpiece.是非限制性定语从句,对a single-point cutting tool作补 充说明作用。 turning ['tə:niŋ] n. 转向;旋转;回转;转弯处v. 旋转(turn的ing形 式) 1) related phrases:turning moment 转矩;turning machine 车床 2)The top is turning like a screw. 那顶端象螺丝一样地旋转着。 3)Spin the pendulum round by turning the red knob. 转动红色的把手使钟摆开始转动。
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机电专业英语徐存善主编
Grinding Grinding makes use of abrasive particles to do the cutting. Grinding operations may be classified as precision or nonprecision, depending on the purpose. Precision grinding is concerned with grinding to close tolerances and very smooth finish. Nonprecision grinding involves the removal of metal where accuracy is not important.

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

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。

全新版大学英语第二版综合教程1Unit3电子教案第2版综合教程一

全新版大学英语第二版综合教程1Unit3电子教案第2版综合教程一

Today: Mental illness can be treated with a range of therapies (治疗) and medications. We know a great deal about the chemistry and the parts of the brain thoughts.
FASTER, CLOSER, BETTER — Technology
1900: The only way to view the Olympic Games in Paris is in person. News about the Games travels to America via (通过) telegraph and is printed in newspapers.
ORIGINS — Earth and Life Science
1900: There is no good explanation for catastrophic events such as earthquakes. The Earth is thought to be a mere 50 million years old, and the evolution of species is hotly debated.
1900:
Astronomy
The Milky Way galaxy (星系)
(including some unexplained nebular
clouds (星云)) is the known universe.
Newton’s laws explain the physical
world. Matter is composed of atoms.

机电专业英语教案

机电专业英语教案
IV.对话
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)

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。

高教高职版ESP机电英语(第二版)教案

高教高职版ESP机电英语(第二版)教案

iContents++++++++Unit 1 Modern Design andManufacturing 1•••Reading and TranslatingReading A CAD/CAMReading B AutoCAD’s Main MenuSimulated Writing — Commercial Correspondence Listening and Speaking — Fair and Exhibition116813Unit 2 Telecommunications 18•••Reading and TranslatingReading A 3GReading B SIM CardSimulated Writing — Fax and E-mailListening and Speaking — Inquiry1818222428Unit 3 Building Service 33•••Reading and TranslatingReading A Fire Alarm SystemReading B Invitation for Bids of Passenger LiftsSimulated Writing — Letter of CreditListening and Speaking — Offer and Counter-Offer3333373844Unit 4 Motor Vehicles 50ii• • •Listening and Speaking — Packing and Shipment60Unit 5 Printing Equipment 65Reading and TranslatingReading A The Battery BusReading B Specifications of Auto Test InstrumentSimulated Writing — Commercial Invoice50 50 55 56 • • •Reading and TranslatingReading A Preventive MaintenanceReading B Heidelberg Print Media CenterSimulated Writing — Bill of Exchange Listening and Speaking — Payment65 65 69 71 74Unit 6 Electric Engineering 78• • •Reading and TranslatingReading A Electric MotorsReading B UPDG and Its ApplicationsSimulated Writing — Bill of LadingListening and Speaking — Contract Negotiation78 78 82 83 88Unit 7 Automation93• • •Reading and TranslatingReading A Industrial RobotReading B Equipment Importing and Personnel Training On Importing Machinery and EquipmentSimulated Writing — Certificate of Origin Listening and Speaking — Agency 93 93 97 99105Unit 8 Air-Conditioning 111• • •Reading and TranslatingReading A Central Station Air Conditioning Systems Reading B Safety Precautions (Please Observe at All Times)Simulated Writing — Insurance PolicyListening and Speaking — Advertising and Sales Promotion111111115117121Unit 9 Numerical Control127iii• • •Reading and TranslatingReading A Voice NC Programming Reading B Laser as a T oolSimulated Writing — Sales ContractListening and Speaking — Setting up a Jo138Unit 10 Home Appliance143int Venture 127127131133• • •Reading and TranslatingReading A Interactive TelevisionReading B Operating Instructions of Digital Video Camera RecorderSimulated Writing — Right & Interest Assignment Listening and Speaking — T echnology Transfer and Cooperation143143 147150155Glossary 160参考答案181参考译文209Part 1response of mechanisms, heat-transfer calculations, and numericalcontrol part programming. Thecollection of application programswill vary from one user firm to thenext because their product lines,manufacturing processes, and2E n g l i s h f o r M e c h a n i c a l & E l e c t r i c a l E n g i n e e r i n g2. What can CAM be used for?3. What are the functions of computers in CAM?customer markets are different. Thesefactors give rise to differences in CAD system requirements.Computer-aided manufacturing (CAM) can be defined as the use of computer systems to plan, manage, and control the operations of a manufacturing plant through either direct or indirect computer interface with the plant’s production resources. As indicated by the definition, the applications of computer-aided manufacturing fall into two broad categories: 1. Computer monitoring and control. 2. Manufacturing support applications. The distinction between the two categories is fundamental to an understand-ing of computer-aided manufacturing.In addition to the applications involving a direct computer-process interface for the purpose of process monitoring and control, computer-aidedUnit 1Modern Design and Manufacturing 3manufacturing also includes indirect applications in which the computerserves a support role in the manufacturing operations of the plant. In theseapplications, the computer is not linked directly to the manufacturing process.Instead, the computer is used “off-line” to provide plans, schedules, forecasts,instructions, and information by which the firm’s production resources can bemanaged more effectively. The form of the relationship between the computerand the process is represented symbolically in the figure given below. Dashedlines are used to indicate that the communication and control link is an off-lineconnection, with human beings often required to consummate the interface.However, human beings are presently required in the application either toprovide input to the computer programs or to interpret the computer outputand implement the required action.CAM for manufacturing supportN EW W ORDS AND E XPRESSIONScategory /5kAtI g ErI/ n.分类component /kEm5pEJnEnt/ n.部分,配件,部件consummate /5k S nsQmeIt/ v.使圆满,使完成define /dI5faIn/ v.界定,给…下定义digital /5dIdVItl/ a.& n.数字(的)distinct /dI5stINkt/ a.清楚的distinction /dI5stINkFEn/ n.区别,差别dynamic /daI5nAmIk/ a.动力的;动态的effectively /I5fektIvlI/ ad.有效地facilitate /fE5sIlIteIt/ v.使容易,使便利,促进implement /5ImplImEnt/ v.实现;执行input /5Input/ v. & n.输入integrate /5IntI5greIt/ v.使完整,使一体化integration /IntI5greIFEn/ a.一体化interface /5IntEfeIs/ n.界面,接口interpret /In5tE:prIt/ v. 解释,说明4keyboard /5ki:5bR:d / n.键盘modification /m S dIfI5keIFEn / n. 修改,更改 off-line /5S f laIn / ad.脱机 optimization /S ptImaI5zeIFEn / n.最佳化,优化 output /5aJtpJt / v. & n. 输出E n g l i s h f o r M e c h a n i c a l & E l e c t r i c a l E n g i n e e r i n gstrain /streIn / n.应变 stress /stres / n.压力,应力 symbolically /sIm5b S lIkElI / ad. 象征性地 terminal /5tE:mInl / n. 终端ultimately /5QltImItlI / ad. 最后,最终;最重要的是 give rise to引起,使发生 move in the direction of 朝…方向移动/发展 provide for 提供Check Your UnderstandingI. Mark the following statements with T (true) or F (false) according to the passage.1. CAD/CAM is concerned with the use of digital computers to perform certain functions in designand production.2. CAD/CAM does provide the technology base for the computer-integrated factory now.3. The computer systems perform specialized design functions only with the software provided.4. The CAD software facilitates the engineering functions of the user firms.The collection of application programs will never change.6. The CAD system requirements change with the customer markets.7. The distinction between CAM’s two categories is not important to the understanding of CAM.Unit 1Modern Design and Manufacturing 58. The firm’s production resources can be managed more effectively with the indirect applicationof CAM.II. Give brief answers to the following questions.1. What will CAD/CAM provide for the computer-integrated factory of the future?___________________________________________________________________2. What does the CAD hardware typically include?___________________________________________________________________3. Why will the collection of application programs vary?___________________________________________________________________4. Can CAM control the operation of a manufacturing plant through the indirect computer interface?___________________________________________________________________5. What is fundamental to the understanding of CAM?___________________________________________________________________6. Besides providing input to the computer programs, what else can human beings do in the application?___________________________________________________________________Build up Your VocabularyIII. Match the items listed in the following two columns.1. software a. programs opposed to system ones2. user firm b. company which applies CAD/CAM to production3. application programs c. the programs used to direct the operation of a computer4. numerical control d. an arrangement of machines or sequence of operationsinvolved with a single manufacturing operation5. product lines e. control of a machine tool, or other devices in a manufacturingprocess by a computer6. manufacturing plant f.factory where many things are produced7. computer interface g.devices or programs designed to link one system toanother8. off-line h.the act or process of computing the removed heat9. output rmation in a form suitable for transmission frominternal to external units of a computer10. heat-transfer calculations j.operating independently of an associated computerIV. Fill in the table below by giving the corresponding translation.6E n g l i s h f o r M e c h a n i c a l & E l e c t r i c a l E n g i n e e r i n gEnglishChinesegraphics display terminals键盘 peripheral equipment硬件 stress-strain analysis应用程序 computer monitoring and control动态响应 computer interface优化设计V. Complete the following sentences by translating the Chinese given in the brackets.1. This technology is moving _______________________________ (正朝着更广泛的应用方向发展).(in the direction of)2. CAD/CAM will _______________________________ (为未来的计算机集成工厂提供技术基础). (provide for)3. The computer systems __________________________________________(由硬件和软件构成).4. The class _______________________________________________ (年龄从15岁到18岁不等). (vary from … to …)5. He decided ________________________________________(要么修好这台电脑,要么买台新的).6. This computer ______________________________________ (并没有与制造过程直接连在一起). (be linked to)■ Reading BAutoCAD ’s Main MenuAUTOCAD ®Main Menu 0. Exit AutoCAD 1. Begin a NEW drawing 2. Edit an EXISTING drawing 3. Plot a drawing 4. Printer Plot a drawing 5. Configure AutoCAD 6. File Utilities7. Compile shape/font description fileUnit 1Modern Design and Manufacturing78. Convert old drawing file9. Recover damaged drawingEnter selection:Here’s a listing of what each main menu selection does.Option 0 (Exit AutoCAD) gets you back to the operating system.Options 1 (Begin a NEW drawing) and 2 (Edit an EXISTING drawing) are where you create, edit and store your drawings in AutoCAD.Options 3 (Plot a drawing) and 4 (Printer Plot a drawing) are where you can print and plot your drawings.Option 5 (Configure AutoCAD) steps you through AutoCAD’s interactive utility to let the CAD program know what hardware you are using.Option 6 (File Utilities) lets you perform disk file maintenance operations just as if you were using the operating system.Options 7 (Compile shape/font description file) and 8 (Convert old drawing file) are special situations and will not be covered in this article. See CUSTOMIZING AutoCAD (New Riders Publishing) or the AutoCAD Reference Manual for details.Option 9 (Recover damaged drawing) is for salvaging a drawing file in which AutoCAD detects an error and will not load.N EW W ORDSAutoCAD 计算机辅助绘图软件configure /kEn5fI g E/ v.配置detect /dI5tekt/ v.发现,探知interactive /IntE5AktIv/ a.互动的,交互的maintenance /5meIntInEns/ n.维修,保养plot /pl S t/ v.规划,绘制salvage /5sAlvIdV/ v.抢救,挽救utility /j u:5tIlItI/ n.实用,效用,(复)设施I. Translate the following phrases into Chinese.1. main menu2. operating system3. begin a new drawing4. edit an existing drawing5. recover damaged drawing6. configure AutoCAD7. perform disk file maintenance operations88. interactive abilityII. Give brief answers to the following questions.1. Which selection do you have to enter if you want to return to the operating system? __________________________________________________________________2. Where do you think you will probably spend most of your AutoCAD hours?E n g l i s h f o r M e c h a n i c a l & E l e c t r i c a l E n g i n e e r i n g__________________________________________________________________ 3. Which selection do you need to enter if you feel it necessary to modify an existing drawing? __________________________________________________________________ 4. What should you do every time you want to create a new drawing?__________________________________________________________________ 5. How can you print your drawings?__________________________________________________________________ 6. What is the function of Option 9?__________________________________________________________________III. Translate the following sentences into Chinese.1. The drawing editor is the AutoCAD equivalent (相等物) to your drafting board.__________________________________________________________________2. Option 6 lets you perform disk file maintenance operations just as if you were using the operating system.__________________________________________________________________ 3. Options 1 and 2 are where you create, edit and store your drawings in AutoCAD. __________________________________________________________________ 4. If you have exited to the operating system, start up AutoCAD again by typing \IA. __________________________________________________________________Part 2Simulated WritingCommercial Correspondence在现代涉外贸易中,商业函件(Commercial Correspondence)是人们普遍采用的业务联络方式。

(完整版)《机电英语》教案

(完整版)《机电英语》教案

新职业英语(机电英语)教案课程名称:实用英语 2Unit 1 Establishing Business Relations (1)Teaching objectives:1) Grasp the main idea and structure of the text;2)Master the key language points and grammaticalstructures in the text;3) Reading strategy and methods.Teaching contents:Reading ATeaching focuses:1) the main idea of the reading A;2) the key language points and grammatical structures in the text;3) How to make a company introduction to the client?Teaching methods:Task-based Approach;Communicative Language Teaching;Activity Teaching Approach;Question-answer Teaching Approach.Teaching aids: blackboard, multimedia, tapeTeaching procedures:Step 1GreetingsStep 2 Warming-up1) ask Ss a question: Can you tell me how to establishbusiness relations?2) ask Ss to turn to page 2,to look at the Task 1 andTask 2,then answer.Step 3Reading A1) Before reading the passage, try to answer the questionsabout company profile.A)What may be included when introducing a company tothe client?B)Which company’s introduction or ads. ever impressedyou most? And why?2) New words and phrases:A) Ask several students to read these new words and phrases;B) Ask students to read the words and phrases after theirteacher.3) SkimmingA) Ask students to read the text as quickly as they can andtried to get the main idea of this passage;B) Ask students to read the text again , then finish Task4on P4.4) Intensive Reading (here is not written.)5)Exercises6) Making a company introductionStep 4 Homework1) Team -work read the text in textbook;2) To preview Listening & speaking.Unit 1 Establishing Business Relations (2)Teaching objectives:1) Improve students' Listening&Speaking;2) Listening strategy and methods;3) Conduct a series of listening, and speaking related to the theme of the unit.4) Master the basic sentence patternsTeaching contents:Listening & SpeakingTeaching focuses:1) Listening strategy and methods;2) basic sentence patternsTeaching methods: Task-based Approach;Communicative Language Teaching;Activity Teaching Approach;Question-answer Teaching Approach.Teaching aids: blackboard, multimedia, tapeTeaching procedures:Step 1Greetings and revisionStep 2 Listening & Speaking1) Listening (Task1-4)Ask Ss to listen the materials carefully and finish the exercises, then check the answers2) Speaking (Task1-2)① Introduce some useful expressions about introduction to the Ss② Work in pairs to complete the chart and then ask several groups to perform it.Step 3 Mini-project1) Divide the whole class into several groups2) Ask Ss to complete it after class3) Ask some groups to present their workStep 4Homework1) To finish exercise book of unit one2) To preview writingUnit 1 Establishing Business Relations (3)Teaching objectives:1) Improve students' writing abilities;2) Conduct a series of writing activities related to the theme of the unit;3) Master the basic sentence patternsTeaching contents:WritingTeaching focuses:1) Letters of establishing Business relations;2) basic sentence patternsTeaching methods: Task-based Approach;Communicative Language Teaching;Activity Teaching Approach;Question-answer Teaching Approach.Teaching aids: blackboard, multimedia, tapeTeaching procedures:Step 1Greetings and revisionStep 2 Writing1) submit the questions: Do you know how to write a l etter of establishing businessrelations?2) summarize the writing’s format, structure and features.3) explain the writing’s new words and expressions.Step3 Exercises:Page11-12Step 4 Homework1) To finish exercise book of unit one2) To preview grammar, vocabulary and structure.Unit 1 Establishing Business Relations (4)Teaching objectives:1) Master class shift;2) grasp parts of speech and sentence componentsTeaching contents:class shift and sentence componentsTeaching focuses:The use of class shift and sentence componentsTeaching methods: Task-based Approach;Activity Teaching Approach;Question-answer Teaching Approach.Teaching aids: blackboard, multimediaTeaching procedures:Step 1Greetings and revisionStep 2 Vocabulary and structureAsk Ss to do the exercises page16-18, while doing the problem found, after the explanation.Step 3 Sentence componentsAsk Ss to do the exercises page20, while doing the problem found, after the explanation. Step 4 HomeworkTo preview Unit2 Reading AUnit 2 Market Research (1)Teaching objectives:1) Grasp the main idea and structure of the text;2)Master the key language points and grammaticalstructures in the text;3) Reading strategy and methods.Teaching contents:Reading ATeaching focuses:1) the main idea of reading A;2) the key language points and grammatical structures in the text;3) Which parts does a market research generally consist of?Teaching methods:Task-based Approach;Communicative Language Teaching;Activity Teaching Approach;Question-answer Teaching Approach.Teaching aids: blackboard, multimedia, tapeTeaching procedures:Step 1GreetingsStep 2 Warming-up1) ask Ss a question: What should you do as a market researcher?2) ask Ss to turn to page 26,to look at the Task 1 andTask 2,then answer.Step 3Reading A1)Before reading the passage, try to answer the questionsabout market research and market report.A) Which parts does a market research generally consist of?B)What makes a market report effective and impressive?2) New words and phrases:A) Ask several students to read these new words and phrases;B) Ask students to follow the teacher to read the words and phrases.3) SkimmingA) Ask students to read the text as quickly as they can andtried to get the main idea of this passage;B) Ask students to read the text again , then finish Task2 & 3on P29.4) Intensive Reading (here is not written.)5)ExercisesStep 4 Homework1) Team -work Task 4 on P29;2) To preview Listening & speaking.Teaching objectives:1) Improve students' Listening, Speaking;2) Listening strategy and methods;3) Conduct a series of listening, and speaking related to the theme of the unit.4) Master the basic sentence patternsTeaching contents:Listening & SpeakingTeaching focuses:1) Listening strategy and methods;2) basic sentence patternsTeaching methods: Task-based Approach;Communicative Language Teaching;Activity Teaching Approach;Question-answer Teaching Approach.Teaching aids: blackboard, multimedia, tapeTeaching procedures:Step 1Greetings and revisionStep 2 Listening & Speaking1) Listening (Task1-5)Ask Ss to listen the materials carefully and finish the exercises, then check the answers.2) Speaking (Task1-2)① Introduce some useful expressions to the Ss.② Work in pairs to complete the Tasks and then ask several groups to perform it. Step 3 Mini-project1) Divide the whole class into several groups2) Ask Ss to complete it after class3) Ask some groups to present their workStep 4 Homework1) To finish exercise of Unit 22) To preview writingTeaching objectives:1) Improve students' writing abilities;2) Conduct a series of writing activities related to the theme of the unit;3) Master the basic sentence patterns.Teaching contents:WritingTeaching focuses:1)Draft a market report2) basic sentence patternsTeaching methods: Task-based Approach;Communicative Language Teaching;Activity Teaching Approach;Question-answer Teaching Approach.Teaching aids: blackboard, multimedia, tapeTeaching procedures:Step 1Greetings and revisionStep 2 Writing1) Submit the questions: Do you know how to write a market report?2) Summarize the writing’s format, structure and features.3) Explain the writing’s new words and expressions.Step3 Exercises: Page38Step 4 Homework1) To finish exercise of Unit22) To preview grammar, vocabulary and structure.Unit 2 Market Research(4)Teaching objectives:1) Master class shift;2) Grasp Modal Verb.Teaching contents:class shift and modal verbTeaching focuses:The use of class shift and modal verbTeaching methods: Task-based Approach;Activity Teaching Approach;Question-answer Teaching Approach.Teaching aids: blackboard, multimediaTeaching procedures:Step 1Greetings and revisionStep 2 Vocabulary and structureAsk Ss to do the exercises page42-44, while doing the problem found, after the explanation.Step 3 Modal VerbAsk Ss to do the exercises page46-49, while doing the problem found, after the explanation. Step 4 HomeworkTo preview Unit3 Reading AUnit 4 Production (Reading)Teaching objectives:1) Describe the functions and applications of CAM;2) Understand the engineer’s introductions3) Master the key language points and grammatical structures in the text;4) Reading strategy and methodsTeaching contents:Reading ATeaching focuses:1) the main idea of the reading A ;2) the key language points and grammatical structures in the text;3) How is CAM applied in the operations of a manufacturing plant?Teaching methods: Task-based Approach;Communicative Language Teaching;Activity Teaching Approach;Question-answer Teaching Approach.Teaching aids: blackboard, multimedia, tapeTeaching procedures:Step 1GreetingsStep 2 Warming-up1) ask Ss a question: What is a electromechanical product ?2) ask Ss to discuss in Task 1:which are electromechanical product in the following pictures?3) ask Ss to arrange the manufacturing order of a product in task2, then invite several Ss to present their answers.Step 3Reading A1) New words and phrasesA) Ask several students to read these new words and phrasesB) Ask students to read the words and phrases after their teacher2) SkimmingA) Ask students to read the text as quickly as they can and tried to get the main ideaof this passage.B) Ask students to read the text again , then finish Task2&3 on P78.3) Intensive Reading1.Cam2. Numerical control3. Process planning4. Robotics4)discussion:How is CAM applied in the operations of a manufacturing plant? Step 4 Homework1) To finish the V ocabulary and Structure on P892) To preview Listening & speaking、writing etc.Unit 4 Production (Listening, Speaking & Writing)Teaching objectives:1) Improve students' Listening, Speaking and Writing abilities;2) Listening strategy and methods;3) Discuss with a technician about product making4) introduce the production status to clientsTeaching contents:Listening & Speaking, Writing & Self-study RoomTeaching focuses:1) Listening strategy and methods ;2) the writing of NOTICES;3) basic sentence patternsTeaching methods: Task-based Approach;Communicative Language Teaching;Activity Teaching Approach;Question-answer Teaching Approach.Teaching aids: blackboard, multimedia, tapeTeaching procedures:Step 1Greetings and revisionStep 2 Listening & Speaking1) Listening (Task1-4)Ask Ss to listen the materials carefully and finish the exercises, then check the answers2) Speaking (Task1-2)① Introduce some useful expressions about make an invitation;② Work in pairs, then ask several groups to perform it.Step 3 Writing1) Teach Ss the writing of NOTICES2) Ask Ss to finish the exercises(Task1,2)3) Check the answersStep 4HomeworkTo preview Unit 7Unit 7 Operational & Technical Management (1)Teaching objectives:1) Grasp the main idea and structure of the text;2)Master the key language points and grammaticalstructures in the text;3) Reading strategy and methods.Teaching contents:Reading ATeaching focuses:1) the main idea of the reading A;2) the key language points and grammatical structures in the text;3) what you usually does for operational and technical management?Teaching methods:Task-based Approach;Communicative Language Teaching;Activity Teaching Approach;Question-answer Teaching Approach.Teaching aids: blackboard, multimedia, tapeTeaching procedures:Step 1GreetingsStep 2 Warming-up1) ask Ss a question: what you usually does for operational and technical management?2) ask Ss to turn to page 146,to look at the Task 1 andTask 2,then answer.Step 3Reading A1)Before reading the passage, try to answer the questionsabout PDM system.A)Have you ever heard about PDM? Do you know its full name?B)Have you ever heard about any other computer-based system used in molddesign?2) New words and phrases:A) Ask several students to read these new words and phrases;B) Ask students to read the words and phrases after their teacher.3) SkimmingA) Ask students to read the text as quickly as they can andtried to get the main idea of this passage;B) Ask students to read the text again, then finish Task4on P4.4) Intensive Reading (here is not written.)5)Exercises task 2 &task3Step 4 Homework1) Team -work read the text in textbook;2) To preview Listening & speaking.Teaching objectives:1) Improve students' Listening, Speaking;2) Listening strategy and methods;3) Conduct a series of listening, and speaking related to the theme of the unit.4) Master the basic sentence patternsTeaching contents:Listening & SpeakingTeaching focuses:1) Listening strategy and methods;2) basic sentence patternsTeaching methods: Task-based Approach;Communicative Language Teaching;Activity Teaching Approach;Question-answer Teaching Approach.Teaching aids: blackboard, multimedia, tapeTeaching procedures:Step 1Greetings and revisionStep 2 Listening & Speaking1) Listening (Task1-5)Ask Ss to listen the materials carefully and finish the exercises, then check the answers2) Speaking (Task1-2)① Introduce some useful expressions about introduction to the Ss② Work in pairs to complete the chart and then ask several groups to perform it.Step 3 Mini-project1) Divide the whole class into several groups2) Ask Ss to complete it after class3) Ask some groups to present their workStep 4Homework1) To finish exercise book of unit 72) To preview writingTeaching objectives:1) Improve students' writing abilities;2) Conduct a series of writing activities related to the theme of the unit;3) Master the basic sentence patternsTeaching contents:WritingTeaching focuses:1)the format of a certificate of warehousing by a consignee2) the layout of a mini-report3) basic sentence patternsTeaching methods: Task-based Approach;Communicative Language Teaching;Activity Teaching Approach;Question-answer Teaching Approach.Teaching aids: blackboard, multimedia, tapeTeaching procedures:Step 1Greetings and revisionStep 2 Writing1) Submit the questions: Do you know how to write a certificate of warehousing by a consignee?2) the layout of a mini-report3) Summarize the writing’s format, structure and features.4) Explain the writing’s new words and expressions.Step3 Exercises: Page156.157Step 4 Homework1) To finish exercise book of unit72) To preview grammar, vocabulary and structure.Unit 7 Operational & Technical Management (4)Teaching objectives:1) Master class shift;2) master subjunctive moodTeaching contents:class shift and sentence componentsTeaching focuses:The use of class shift and subjunctive moodTeaching methods: Task-based Approach;Activity Teaching Approach;Question-answer Teaching Approach.Teaching aids: blackboard, multimediaTeaching procedures:Step 1Greetings and revisionStep 2 Vocabulary and structureAsk Ss to do the exercises page161-163, while doing the problem found, after the explanation.Step 3 su bjunctive moodAsk Ss to do the exercises page164-165, while doing the problem found, after the explanation. Step 4 HomeworkTo preview Unit8 Reading AUnit 8 Marketing and After-Sales Service (1)Teaching objectives:1) Grasp the main idea and structure of the text;2)Master the key language points and grammatical structures in the text;3) Reading strategy and methods.Teaching contents:Reading ATeaching focuses:1) the main idea of the reading A;2) the key language points and grammatical structures in the text;3) How to work out marketing strategies for a company?Teaching methods:Task-based Approach;Communicative Language Teaching;Activity Teaching Approach;Question-answer Teaching Approach.Teaching aids: blackboard, multimediaTeaching procedures:Step 1GreetingsStep 2 Warming-up1). What qualities are important for a great salesman? why?(hard work, self-confidence, insight, leadership, good luck, strong will, communication skills…)Step 3Reading A1)Before reading the passage, try to answer the questions about niche marketing and after-sales service.A) Which company do you know has good marketing strategies? Can you give a marketing case?B) Why should a company offer after-sales service?2) New words and phrases:A) Ask several students to read these new words and phrases;B) Ask students to read the words and phrases after their teacher.3) SkimmingA) Ask students to read the text as quickly as they can and tried to get the main idea ofthis passage;B) Ask students to read the text again, then finish Tasks.4) Intensive Reading5) Ss conclude the marketing strategies in the passage.Step 4 Homework1) Team-work read the text in textbook;2) To preview Listening & speaking.Unit 8 Marketing and After-Sales Service (2)Teaching objectives:1) Improve students' Listening&Speaking;2) Listening strategy and methods;3) Conduct a series of listening and speaking related to the theme of the unit;4) Master the basic sentence patterns;Teaching contents:Listening & SpeakingTeaching focuses:1) Listening strategy and methods;2) basic sentence patternsTeaching methods: Task-based Approach;Communicative Language Teaching;Activity Teaching Approach;Question-answer Teaching Approach.Teaching aids: blackboard, multimedia, tapeTeaching procedures:Step 1Greetings and revisionStep 2 Listening & Speaking1) Listening (Task1-5)Ask Ss to listen the materials carefully and finish the exercises, then check the answers.2) Speaking (Task1-4)① Introduce some useful expressions about introduction to the Ss② Work in pairs to complete the chart and then ask several groups to perform it.Step 3 Mini-project1) Divide the whole class into several groups2) Ask Ss to practice making short conversations with each other.3) Ask Ss to present their conversations.Step 4 HomeworkTo preview writingUnit 8 Marketing and After-Sales Service (3)Teaching objectives:1) Improve students' writing abilities;2) Conduct a series of writing activities related to the theme of the unit;3) Master the basic sentence patterns.Teaching contents:WritingTeaching focuses:1) Writing of products’introduction.2) Basic sentence patterns.Teaching methods: Task-based Approach;Communicative Language Teaching;Activity Teaching Approach;Question-answer Teaching Approach.Teaching aids: blackboard, multimedia, tapeTeaching procedures:Step 1Greetings and revisionStep 2 Writing1) submit the questions: Do you know how to write products’ introduction?2) summarize the writing’s format, structure and features.3) explain the writing’s new words and expressions.4)Ask Ss to write an introduction of product.Step3:Ss’ work presentation.Step4: Exercises: Page181Step 5 HomeworkTo finish exercise book of unit 8Unit 8 Marketing and After-Sales Service (4)Teaching objectives:Make a survey on customers ‘feedback to the products and servicesTeaching contents:ack to the products and servicesCustomers ‘feedbTeaching focuses:Making a surveyTeaching methods: Task-based Approach;Activity Teaching Approach;Question-answer Teaching Approach.Teaching aids: blackboard, multimediaTeaching procedures:Step 1Greetings and revisionStep 2 Vocabulary and structureservices.Show Ss several samples about cus tomers’ feedback to products or.Ask Ss to make a survey on customers ‘feedback to the products and services Step 3 Work presentationStep 4 HomeworkTo review unit 8Grammar : Attributive ClauseTeaching objectives:1)get the Ss to understand the meaning and usage of attributive clause.2)get the Ss to know the what are antecedent,relative pronoun and relative adverb;3) get the Ss to know the difference between the restrictive and non- restrictive attributive clauseTeaching contents:The definition,usage,structure of attributive clauses and the comparison between restrictive and non- restrictive attributive clauseTeaching focuses:1) forms and usage of the attributive clause;2) the comparison between restrictive and non- restrictive attributive clause;Teaching methods: Task-based Approach;Activity Teaching Approach;Question-answer Teaching Approach.Teaching aids: blackboard, multimedia, tapeTeaching procedures:Step 1Greetings and revisionStep 2 task presentation1) ask the Ss to underline the attributive clause in the following passage.2) task 1 use the information in the brackets to modify the phrases;Ask Ss to complete the following sentences with appropriate relative pronouns or adverbs; Step 3 presentation1) list some sentences with attributive clause;2) Ask Ss to find out the center noun of each sentence;3) explain to the class what is antecedent, w hat is relative pronoun and relative adverb.Step 4 Mini-project1) list some sentences with errors;2) Ask Ss to find them out;3) Ask Ss to correct it.Step 5HomeworkTo finish exercise bookGrammar : TensesTeaching objectives:1)get the Ss to understand the meaning and usage of basic tenses.2)get the Ss to know the difference between simple present and present continuous;simple past and present perfect; present perfect and present perfect continuous;will and be going toTeaching contents:The definition,usage,structure of the basic tenses and the comparison between some confusing tensesTeaching focuses:1) forms and usage of the tenses;2) the comparison between some confusing tenses;3) temporal adverbial of each tenseTeaching methods: Task-based Approach;Activity Teaching Approach;Question-answer Teaching Approach.Teaching aids: blackboard, multimedia, tapeTeaching procedures:Step 1Greetings and revisionStep 2 task presentation1) task 1 cross out the incorrect tenses of the verbs in the following sentences;Ask Ss to finish the exercises carefully and then check the answers2) Task 2 fill in the blanks with the simple present or present continuous tense of the verbs. Step 3 the presentation of each tense.1) list some sentences of each tense;2) Ask Ss to generalize the structure of each tense;3) ask the Ss to underline the time temporal in each sentence.Step 4 Mini-project1) list some sentences with errors;2) Ask Ss to find them out;3) Ask Ss to correct it.Step 5HomeworkTo finish exercise book。

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Unit 3 Machine ToolsI.Lead-inInformation related to the textHow many types of basic machine tools are there? Do you know what parts can be processed with these machine tools? Do you know the differences among these machine tools? Do you know how these machine tools are used in the cutting a metal?In this unit, you’ll learn the knowledge about the five basic machine tools. Now, let’s study key words and phrases together.II. Word Study1. drill [dril] n. 钻床,钻头,训练; vt. 钻孔,训练vi. 钻孔;训练1) related phrases:drill press 钻床;twist drill麻花钻;hand drill 手电钻2)The workers are using the advanced electric drill.工人们正在使用先进的电子钻。

3) The dentist drilled a hole in the tooth.牙科医生在牙齿上钻个洞。

2. lathe [leið] n. 车床vt. 用车床加工1) related phrases:lathe tool[机]车刀;lathe bed车床床身;lathe chuck 车床卡盘2) Existing lathe, CNC lathe, milling machine, grinder and other equipment more than 10.现有车床、数控车床、铣床、磨床等各类设备10余台。

3) He turned the wood on a lathe.他在车床上车削了那块木料。

3. milling [mil] n. 磨,制粉,【机械学】铣削;v. 碾磨;磨成粉1) related phrases:milling machines 铣床,milling cutter铣削刀具, milling planer龙门铣床, milling spindle铣刀轴2) High-speed spindle system is one of the keys to high-speed milling.高速主轴系统是高速铣削的关键之一。

3) The factory has lathes, milling machines, grinding machine, planer, line cutting, EDM, processing centres and other facilities.本厂拥有车床,铣床,磨床,刨床,线切割,电火花,加工中心等设备。

4. grinder ['ɡraində] n. 磨床,研磨机;研磨者;[机]磨工;[医]臼齿1) related phrases:surface grinder 平面磨机;cylindrical grinder 外圆磨床;buff grinder 抛光机2)Cylindrical Grinder also undertake the processing.同时还承接外圆磨床加工。

3)Basic operation skill for Surface Grinder, Milling Machine and Lathe, Knowledge in basic engineering drawing and basic mold tooling concept.能操作熟悉平面磨床,手动铣床,车床等设备,能看懂基本的工程图纸,具备基本的模具概念。

5. boring [bɔ:] n. 钻孔,镗削vt.钻(孔),【机械学】镗(孔);adj.无聊的1) related phrases:boring bar镗杆;钻杆;horizontal boring and turning mill 卧式镗床;boring cutter镗刀2) It is very important that determine arbor size when planning process of boring on lathe.在制定车床上镗孔的工艺规程时,镗刀杆尺寸的确定十分重要。

3) Today is a boring day.今天是个无聊的一天。

4)Marriage is not love, is often trivial and more boring, less passion and romance.婚姻不像爱情,往往是多了琐碎和枯燥,少了激情与浪漫。

III.Language points1. Tapping is the process of cutting a thread inside a hole so that a cap screwor bolt may be threaded into it.译文:攻丝是在孔里切出螺纹的过程,以便螺钉或螺栓能旋合进去。

说明:句中process of …的过程,so that a cap screw or bolt may be threaded into it作目的状语。

threaded [θ'redid] adj. 有线状图案装饰的v. 穿过;穿线于(thread的过去分词)1) related phrases:threaded connection 螺纹连接;threaded bush 套筒螺母2)Each lever has two threaded connectors for chain installation.每个杆都有两个螺纹连接器用于链条安装。

3)Each end is threaded to allow the installation of valves, connections, or relief devices. 每一端都车有螺纹,以安装阀门、接头或减压装置。

2. For turning operations, the lathe uses a single-point cutting tool, which removes metal as it travels past the revolving workpiece.译文:在车削操作中,车床用一个单刃切削刀具在旋转的工件上进行金属切削。

说明:句中which removes metal引导非限制性定语从句修饰 a single-point cutting tool, as it travels past the revolving workpiece.是时间状语从句。

turning ['tə:niŋ] n. 转向;旋转;回转;转弯处v. 旋转(turn的ing形式)1) related phrases:turning moment 转矩;turning machine 车床2)The top is turning like a screw. 那顶端象螺丝一样地旋转着。

3)Spin the pendulum round by turning the red knob.转动红色的把手使钟摆开始转动。

3. Milling can produce flat or angled surfaces, grooves, slots, gear teeth, and other profiles, depending on the shape of the cutters being used.译文:铣削根据所用的铣刀形状可分别加工平面或斜面、槽口、缝、齿轮的齿和其他的型面。

说明:句中depending on the shape of the cutters being used作伴随状语。

4. In shaping, the cutting tool on a shaper reciprocates or moves back and forth while the work is fed automatically towards the tool.译文:在刨削的操作中,当工件自动朝刀具方向进给时,牛头刨床上的刀具作往复或前后移动。

说明:句中while the work is fed automatically towards the tool作时间状语从句。

reciprocate [ri'siprəkeit]vt. 报答;互换;互给vi. 往复运动;互换1)The piston is reciprocating inside cylinder.活塞在汽缸内部往复运动。

2)I hope I can reciprocate your hospitality some time.我希望下次能回报你的热情款待。

句中,back and forth反复地,来回地1)COM links all of components in the system together, enabling them to pass requests and information back and forth.COM将系统中的所有组件连接在一起,允许它们来回传送请求和信息。

2)She walked back and forth on the path.她在小路上来来回回地走着。

5. Precision grinding is concerned with grinding to close tolerances and very smooth finish.译文:精磨应用于接近于精密公差和光洁度很高的磨削。

说明:句中be concerned with涉及…,关于…,与…有关1)Scholars and researches should not be concerned with whether their work makes a contribution to the larger society.我们不应该仅仅关注学者和研究者的著作能否对社会做出贡献。

说明:close tolerances紧公差;严格的容限1) related phrases:close-tolerance forging精确(公差)锻件;close toleranceflame cutting 高精度火焰切割2)Our casting process ensure high consistent quality casting and our uniquely designed. High-precision machining equipment can produce part within close tolerance at all time.严密的生产管理,先进的工艺设计,精密的设备,在任务时候都能保证生产出高质量的零件。

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