机电专业英语unit 2
机电英语Unit2PPT课件
2. What makes a market report effective and impressive?
Unit 2 Market Research
Reading A
Gas Compressor Market in China — The Past and the Future
Unit 2 Market Research
Task 1 As a market researcher, Ellen may experience the
following situations. Match each situation with its corresponding picture.
As a kind of general machinery, gas compressor is widely
used in such industries as petrochemical, steel, metallurgy and automobile. Gas compressor is mainly divided into several types, including centrifugal gas compressor, reciprocating gas compressor, and piston gas compressor.
1. There is a sharp increase in the last five years, that is, from 2003-2008.
2. The past decade witnessed a steady decrease in the labor costs in this field.
(完整版)机电专业英语
一．单词翻译(英译汉，汉译英共20分）compound pulley 组合滑轮screw 螺丝worm gear 涡轮clearance fit 间隙配合transition fit 过渡配合interference fit 过盈配合ground teeth 精密齿gear reductions 齿轮减速比aluminum 铝brass 黄铜bronze 青铜cast iron 铸铁carbon 碳钢alloy steel 合金钢hardened steel 硬化钢stainless steel 不锈钢plastic materials 塑料材料gear teeth 齿轮straight-toothed 直齿轮rack and pinion 齿条和齿轮straight bevel gears 直齿锥齿轮spiral bevel gears 弧齿锥齿轮friction 摩擦lubrication 润滑lubricant 润滑剂full fluid film lubrication 全液态薄膜润滑boundary lubrication 边界润滑elastrohydrodynamic lubrication 流体弹性动力润滑proton 质子neutron 中子parallel circuit 并联电路series circuit 串联电路electron 电子inductor 电感capacitor 电容conductor 导体semiconductor 半导体metal-oxide-semiconductor 金属氧化物半导体integrated circuit 集成电路integrated circuit chip 集成电路芯片dopant 掺杂剂mask 掩膜doping 掺杂photoresist 感光胶etch 蚀刻法dielectric 非传导性（电介质）rung 梯级branch 分支instructions 指令power rails 母线quantity 数量parameter 参数ladder diagram 梯形逻辑图ON-delay timer 通电延时定时器OFF-delay timer 断电延时定时器retentive timer 保持定时器proximity timer 接近开关electromechanical control 机电控制mobile robots 可移动机器人manipulator robots 操作机器人self reconfigurable robots 自变形（重装）机器人Analog-to-Digital Converter A/D模数转换器Digital-to-Analog Converter D/A模数转换器ASIC(Application Specific Integrated Circuit)专用采集电路Laplace transform 拉普拉斯变换Z-transform Z变换valve 阀pump 泵motor 发动机cavitation 气穴hydraulic 液压的equilibrium position 平衡位置vibration(oscillation) 振动transducer 饱和电抗器,传感器，变频器reservoir 油箱pump with electric motor 电力马达泵unloader and safety relief valve 减荷器和安全卸压阀check valve 止回阀accumulator 蓄电池valve manifold 阀箱electronic control card 电子控制插件cylinder 汽缸hydraulic motor 液压发动机return line filter 回油阀derivative 导数displacement 位移velocity 速度acceleration 加速度peak amplitude 振幅峰值digital signal processing 数字信号处理二、汉译英（20分）1.滑轮相比机器的缺点是使用刚性物体来传递力，滑动和伸展拉紧。
机电专业英语.Lesson 2
High-carbon
steel: Tools made from highcarbon steels, 0.80 to 1.3%, are used for small-quantity production of wood parts or machining soft materials such as freecutting steels and brass. It is important that the operational temperatures be kept below 400℉ because the material loses its hardness above this temperature. For this reason coolants should be used freely.
High-speed
steels may be made by the powder metallurgy process. This process uses no binder. In that respect it differs from the carbides. The materials are melted, atomized into powdered particles, compacted, sintered, and heat treated to desired hardness. These HSS have better tool properties than those of conventional HSS materials.
It should be noted that some hardened materials will retain their hardness after being subjected to high temperatures during the cutting operation and cooled to room temperature. Such tool materials are ceramics, carbides, cast materials, and highspeed steel(HSS) up to 1000℉. Carbon steel loses its hardness almost immediately upon being cooled from elevated to room temperature.
机电英语 Unit 2
Section Ⅰ Speaking and Listening
Unit 2
E: Oh yeah. A: No, thanks. E: What is wrong with snake blood? A: I just don't like the idea. E: Or maybe you scared? Afraid of something new? A: No, I just don't like the idea. That’s all. E: Ha ha! Like every tourist. You are all the same. Just like America. A: So never refuse an invitation. Never resist the unfamiliar. Never fail to be polite. A: Gentlemen, that was excellent. Never outstay your welcome. Just keep your mind open and suck in the experience. And if it hurts, it's probably worth it. From The Beach
Unit 2
Section Ⅰ Speaking and Listening
Unit 2
例1
Directions: 同上例。
A. $5
B. $50
C. $45
D. $55
稍一浏览选择项即可注意到对话与钱有关，而且极有可能是物品
的价格，听音时，应注意有关数字和关键词。录音原文为：
Section Ⅵ Fun Time
(完整版)机电专业英语试题及答案
《机电专业英语》考试题一．翻译词汇mechatronic 机电一体化（技术）sensor传感器actuator执行元件，执行结构Feedback反馈deviation偏差hydraulic液压的machine tool机床geometric modeling 几何建模job-lot amount单批量maintenance维护pallet随行夹具robot机器人drill钻床，钻头Lathe车床mill 铣床shaper牛头刨床planer龙门刨床grinder磨床tap攻丝pulley滑轮shaft轴bore 镗削screw螺杆tolerance公差torque转矩nut螺母spring弹簧key键bearing轴承coupling联结器clutch离合器diode二极管transistor三极管transistors 晶体管integrated circuit 集成电路chip 芯片capacitor 电容器resistor 电阻digital 数字（式）的lever杠杆Servomechanism伺服机构closed-loop闭环actuator 传动装置following device随动装置troubleshoot故障排除二．汉译英1.机电一体化技术，电子学，机械学，智能数控，机器人学，信息技术，科学术语。
Mechatronics , electronics, mechanics, intelligent control, robotics.information technology , scientific term .2.机电一体化技术广泛用于汽车工业、机械工业以及国防工业。
Mechatronics has been applying widely to auto industry, mechanical industry and national defense industry.3.大多数的机加工主要是由五种基本的机床来完成。
机电专业英语Unit 2 words
4. delivery: n. delivering (of letters, goods, etc.); goods, mail to be delivered e.g. Your order is ready for delivery.
6. distribute: v. a. to separate something into parts and give a share to each penstrators distributed leaflets to passers-by.
New Words and Expressions
1. revenue: n. income, esp. the total annual income of the State from taxes, etc. e.g. The steady rise in oil revenues has enabled the government to invest more money in public health and education.
We had a big delivery of coal today.
5. fierce: a. intense, violent and angry e.g. His plan met with fierce opposition.
There is a fierce competition for those scholarships.
Clothes and blankets have been distributed among the refugees.
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。
机电类专业专业英语
Unit 1 MetalsThe use of metals has always been a key factor in the development of the social systems of man.在人类社会的发展中，金属的应用一直起着关键的因素Of the roughly 100 basic elements of which all matter is composed, about half are classified as metals 构成物质的大约100多种元素中，大约有一半为金属元素。
The distinction between a metal and a nonmetal is not always clear-cut.金属和非金属之间的区别并不是很明显The most basic definition centers around the type of bonding existing between the atoms of the element, and around the characteristics of certain of the electrons associated with these atoms. 最基本的定义集中在元素原子间存在的连接形式和与这些原子相关联的电子的某些特性.In a more practical way, however, a metal can be defined as an element which has a particular package of properties.然而，在实际应用中，金属可以定义为具有某些特性集合的某种元素。
Metals are crystalline（晶体的）when in the solid state and, with few exceptions (e.g. mercury), are solid atambient temperatures（常温下）. 除少数金属外如水银，金属在常温下是固态的They are good conductors of heat and electricity and are opaque（nonopaque）to light。
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[6] Nodular or ductile iron is used to manufacture a wide range of automotive engine components including cam shafts, crank shafts, bearing caps and cylinder heads.
[5] The hard brittle white cast iron surface is desirable in those instances where a material with extreme abrasion resistance is required.
desirable：adj.理想的，可取的where引导定语从句，修饰those instances。 extreme abrasion resistance：极端的耐磨性。
m) n) o) p) q) r) s)
t)
u) v)
w)
x) y) z)
casting [5kB:stiN] n. 铸造 billet [5bilit] n. 钢坯 automotive [C:tE5mEtiv] n. 汽车 intricate [5intrikit] adj. 复杂的，错综的intricate molds 复杂模具 manifold [5mAnEfEuld] n. 支管 versatile [5vE:sEtail] adj. 多才多艺的 cementite [si5mentait] n. 渗碳 substance [5sQbstEns] n. 物质，实体 ductile [5dQktEl, -tail] adj. 柔韧的 machinable [mE5Fi:nEbl] adj. 有延展性的，可锻的 machined加工 brittle [5britl] adj. 脆的，易碎的 anneal [E5ni:l] n. 退火 component [kEm5pEnEnt] n. 组件 cylinder [5silindE] n. 汽缸
短语a wide range of：范围广泛的 cam shafts：凸轮轴 crank shafts：曲柄轴 bearing caps：轴承盖 cylinder heads：汽缸盖。
翻译：由于铁是大自然中最为常见的元素之一，铸 铁和钢作为工件材料应用很广泛。
[3] Cast iron is an iron carbon mixture which is generally used to pour sand castings, as opposed to making billets or bar stock. 短语as opposed to：相对于。which引导定语从句，修饰 iron carbon mixture。
Notes （课文注释）
[1] All metals which contain iron (Fe) are known as ferrous materials. 短语be known as：称为，叫做。which引导定语从句。
翻译：所有含有铁的金属称为铁类材料。
[2] The extensive use of cast iron and steel workpiece materials, can be attributed to the fact that iron is one of the most frequently occurring elements in nature. 短语be attributed to：归因于。that引导同位语从句， iron is one of the most frequently occurring elements in nature即是fact的内容。
Materials（阅读材料）
New Words and Phrases （生词和短语）
a)
b)
c) d) e) f) g) h) i) j) k) l)
cast iron 铸铁 gray cast iron 灰铸铁 white cast iron 白口铸铁 malleable cast iron 可锻铸铁 nodular cast iron 球墨铸铁 ferrous [5ferEs] adj. 铁的，含铁的 pig iron 生铁 wrought iron 熟铁，锻铁 carbon [5kB:bEn] n.碳 alloy [5AlCi] n. 合金。【例】alloys steels: 合金钢 extensive [iks5tensiv] adj. 广泛的 mixture [5mikstFE] n.. 混合物
automotive engine blocks：汽车发动机组 cylinder heads：汽缸盖 valve bodies：阀体 heavy equipment oil pans：重型设备油盘 machine bases：机械的基本部件。
翻译：它常用于制造汽车发动机组，汽缸盖，阀体， 支管，重型设备油盘和机械的基本部件。
翻译：铸铁是一种铁碳混合物，较多用于浇铸砂模铸 件，而不是建房屋或作棒料。
[4] This material is often used for automotive engine blocks, cylinder heads, valve bodies, manifolds, heavy equipment oil pans and machine bases.
UNIT two Engineering Materials
Text 1
Cast Iron
Steel
Text 2
Text 3
Materials Selection Grammars（语法）
Text 4
TEXT 1 Cast Iron
New
Words and Phrases（生词和短语）
Notes（课文注释） Reading