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