机械专业英语.ppt

机械专业英语
第一页，共44页。
学****要求
1、了解科技英语的表达方式和方法,能够阅读和翻译较简单的本专业相关的科技文章。
2、了解英语科技文章的结构，掌握及本专业有关的英语词汇和专业术语。
3、在学****专业英语的同时，掌握获取外文专业资料及阅读能力。
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第二页，共44页。
Part 1 Materials & Hot working
Lesson 4 Metals
Lesson 6 Plastics and Other Materials
Lesson 9 Casting
Lesson 11 Forging
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第三页，共44页。
Lesson 4 Metals
Vocabulary：
1. toughness n. 韧性

v. 倾倒，堆放
n. 铁
5. copper n. 铜

7. bronze 青铜
8. alloy 合金
9. wear 磨损
10. metallic 金属的
11. specification 操作规程，技术说明
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Vocabulary：
12. extract 提炼
13. iron 铁

a. 铁的；二价铁的
ferrous metals 黑色金属
metals 有色金属



；矿砂
；不纯
a. 矿物的
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翻译技巧1——翻译标准及过程
翻译标准
准确明白
通顺严密
简练全面
翻译过程
理解阶段
表达阶段
校核阶段
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第六页，共44页。
Metals and Ferrous Metals
Metals are divided into two general types-ferrous and nonferrous. Ferrous metals are those which contain iron. Nonferrous metals are those which do not contain iron. However, some nonferrous metals may contain a small amount of iron as an impurity.
Steel and cast iron are the most common ferrous metals in general use. Steel is an alloy containing chiefly iron, carbon, and certain other elements in varying amounts. A wide range of physical properties may be obtained in steel by controlling the amount of carbon and other alloying elements and by subjecting the steel to various heat treatments.
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Plain carbon steel usually contain, besides iron and carbon, small amounts of silicon, sulphur, phosphorus（磷）, and manganese（锰）. Alloy steels are formed by the addition of one or more of the following elements: nickel（镍）, chromium（铬）, molybdenum（钼）, vanadium（钒）, tungsten（钨）, manganese, silicon, and small amounts of other alloying elements.
Low-carbon steels are usually used for low-strength parts requiring a great deal of forming. Medium-carbon steels are used for forgings and other