科技英语读本 机械动力类PDF电子书下载

A.Reading Materials 1

Unit 1 Engineering and Engineer 1

1.1 Engineering 1

1.2 Mechanical Engineering 8

1.3 The Main Tasks of an Engineer 12

Unit 2 Computer Knowledge 15

2.1 Computer 15

2.2 Programming Languages 20

2.3 Computer Viruses 24

Unit 3 Mechanics Foundation 27

3.1 Basic Concepts in Mechanics 27

3.2 Mechanical Properties of Metals 32

3.3 Machines and Work 36

Unit 4 Materials and Heat Treatment 40

4.1 Metallic and Nonmetallic Materials 40

4.2 Iron and Its Production 43

4.3 Heat Treatment of Steel 46

Unit 5 Hot-Working Processes 49

5.1 Pressure Die Casting 49

5.2 Forging 52

5.3 Welding 55

Unit 6 Machining and Machine Tools 58

6.1 Metal-Cutting Process 58

6.2 Machine Tools 61

6.3 Lathe 63

Unit 7 Friction and Mechanisms 66

7.1 Friction 66

7.2 Mechanisms 69

7.3 Gears 71

Unit 8 Thermodynamics and Heat Transfer 75

8.1 The Nature ofThermodynamics 75

8.2 Heat Transfer 78

8.3 Necessity of Studying Heat Transfer 80

9.1 Fluid 83

Unit 9 Fluid and Fluid-Power System 83

9.2 Fluid-Power System(Ⅰ) 86

9.3 Fluid-Power System(Ⅱ) 88

Unit 10 Machine Design and CAD/CAM 91

10.1 Machine Design 91

10.2 Computer Aided Design 94

10.3 CAD/CAM 97

11.1 Dimensioning 101

Unit 11 Dimension and Measurement 101

11.2 Dimensional Tolerances and Surface Roughness 104

11.3 Measurement 107

Unit 12 Machine Parts 110

12.1 Springs 110

12.2 Bearings(Ⅰ) 113

12.3 Bearings(Ⅱ) 116

Unit 13 Mechanical Devices 119

13.1 Gearbox 119

13.2 Clutch 121

13.3 Differential 124

Unit 14 Power Machinery 127

14.1 Locomotives(Ⅰ) 127

14.2 Locomotives(Ⅱ) 130

14.3 The Internal Combustion Engine 133

Unit 15 Mechatronics and Robots 136

15.1 Mechatronics 136

15.2 Industrial Robots(Ⅰ) 139

15.3 Industrial Robots(Ⅱ) 142

B.Appendixes 144

一、科技英语的特点 144

二、科技英语词汇构词常识 147

(一)英语单词的构成 147

(二)科技英语词汇中常用的前缀 149

(三)科技英语词汇中常用的后缀 157

三、科技英语翻译概述 162

Vocabulary 168

References 200