Unit 1 Mechanical Engineering 1
Passage 1 Manufacturing and Designing of Production 1
Passage 2 Engineering Graphics and Computer-Aided Design 7
Passage 3 Tolerance and Fits 13
专业英语能力技巧（1） 18
Unit 2 Engineering Materials 22
Passage 1 Classification of Engineering Materials 22
Passage 2 Mechanical Properties of Metals 25
Passage 3 Heat Treating of Tool Steels 30
Passage 4 Plastics 36
专业英语训练技巧（2） 41
Unit 3 Electrical and Electronical 45
Passage 1 Circuits 45
Passage 2 Electronic Component 50
Passage 3 Parallel Operation of Transformers 54
专业英语训练技巧（3） 56
Unit 4 Machine Parts 60
Passage 1 Shafts 60
Passage 2 Gears 63
Passage 3 Bearings 70
Passage 4 Clutches and Screws 73
专业英语训练技巧（4） 78
Unit 5 Mechanism 82
Passage 1 Mechanisms 82
Passage 2 Worm Gear Sets 87
Passage 3 Mechanical Design and Belt Drives 91
专业英语训练技巧（5） 94
Unit 6 Machinery Design and Manufacture 98
Passage 1 The Lathe and Planer 98
Passage 2 Milling Machines 103
Passage 3 Numerical Control Machines 107
Passage 4 Machining Center 115
Passage 5 CAD/CAM 122
Passage 6 Flexible Manufacturing Systems 129
Passage 7 Virtual Manufacturing 135
Passage 8 Computer Integrated Manufacturing System 139
专业英语训练技巧（6） 143
Unit 7 Forming Process 146
Passage 1 Plastics Forming and Molds 146
Passage 2 This Composition Is Covered by the American 150
Passage 3 Piercing and Blanking Die Design 156
Passage 4 Forging 162
专业英语训练技巧（7） 167
Unit 8 Mechatronics 170
Passage 1 Mechatronics and Education 170
Passage 2 What Is a PLC? 175
Passage 3 Fundamentals of Single-chip Microcomputers 181
Passage 4 Industrial Robots 187
Passage 5 Home Automation 194
Passage 6 Digital Camera 200
专业英语训练技巧（8） 205
Unit 9 Automobiles 211
Passage 1 Fundamentals of Automobile 211
Passage 2 Internal Combustion Engine 217
Passage 3 The Electrical System 226
Passage 4 Transmission 235
Passage 5 Suspension System and Axle 242
专业英语训练技巧（9） 248
Unit 10 Engineering Machinery 253
Passage 1 Bulldozers 253
Passage 2 Loader 257
Passage 3 Tower Crane 262
专业英语训练技巧（10） 266
附录1 机械工程常用缩略语 270
附录2 常用工具、量具和机械零部件英文名 273
参考文献 282