机械工程专业英语课本翻译全部
273页1、机械工程专业英语,绪论,1.专业英语 Special English Professional English 2.基础英语 Elementary English 3.教学要求 主要培养学生专业文献的阅读和翻译水平,掌握一定的专业词汇和专业术语,拓宽专业知识面,了解机械专业前沿的相关内容。,教学内容,1.教材 机械工程专业英语中国电力出版社出版 2.教学章节 PART Mechanical Materials and Heat Treatment 1. Ferrous Metals and Their Use 2. Nonferrous Metals 4. Castings 5. Forging 7. Heat Treatment 8. Engineering Material,(续前页)教学章节,PART II Mechanical Elements and Mechanisms 1. Transmission 2. Gear 3. Belt Drive 4. Coupling 5. Bearing 9. Properties of Hydraulic Fluids PART Mec
2、hanical Design 1. Mechanical Design,学习本课程注意事项,1.尊重原文 专业文献较为严谨,因此翻译过程中不需要加入过多的修饰词语,不要主观随意添加 2.避免“专业笑话” Drilling a hole Machine tools,Lesson 1 Ferrous metals and Their Use,Words and Expressions,Paragraph Analysis,Paragraph 1 It is known that ferrous metals are very important in the world, and have the greatest importance for industry. 众所周知黑色金属是非常重要的,对工业来说最为重要。More than 90% by weight of the metallic materials used by human beings are ferrous alloys. 人类使用的90%以上的金属材料为黑色金属合金,Metals consisting of iron
3、combined with some other elements are known as ferrous metals; all the other metals are called nonferrous metals. 由铁和一些其他元素构成的金属被称为黑色金属;所有其他的金属被称为有色金属。 Ferrous metals include plain-carbon steels, alloy and tool steels, stainless steels, and cast irons. 黑色金属包括普通碳钢、合金钢、工具钢、不锈钢和铸铁。 plain-carbon steels普通碳钢, alloy and tool steels,合金钢、工具钢、 stainless steels,不锈钢and cast irons铸铁,These groups of ferrous alloys have a wide variety of characteristics and applications. 这些黑色金属合金具有各种特性且应用广泛,Paragraph 2,Carbon
4、steels are the most common steels used in industry. 碳钢是工业中最常使用的一种钢材。 These eminently practical materials find applications from ball bearings to metal sheet formed into automobile bodies. 这些实用材料被应用于从滚珠轴承到汽车壳体的金属板。 The properties of these steels depend only on the percentage of carbon they contain. 这些钢的性质仅仅依赖于碳的含量。,Low carbon steel containing from 0.02 to 0.25 percent carbon, and they are very soft and can be used for bolts and for machine parts that do not need strength. 低碳钢含碳量0.02-0.25%,它们很软,能够
5、用于螺栓和不需要强度的机械零件。Medium carbon steel containing from 0.25 to 0.6 percent carbon which is a better grade and stronger than low carbon steel. 中碳钢含碳量0.25-0.6%,相比低碳钢品质更好,强度更高。,High carbon steel containing from 0.6 to 2.11 percent carbon, these steel is sometimes called “ tool steel ”. 高碳钢含碳量0.6-2.11%,这些钢有时被称为工具钢。 They obtain high hardness by a quench and temper heat treatment. 它们通过淬火和回火热处理获得高硬度。 Their applications include cutting tools in machining operations, dies for die casting, forming dies, and
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