SECTION 1 Mechanical Engineering 1
UNIT 1 1
Text Heat Treatment of Steels 1
Reading Material Iron and Steel 4
Exercises 4
UNIT 2 6
Text Forming and Machining 6
Reading Material Five Basic Machining Techniques 9
Exercises 10
UNIT 3 12
Text Machine Elements 12
Reading Material Gears 14
Exercises 17
UNIT 4 18
Text CAD and Applications 18
Reading Material Two-Dimensional Drawings 20
Exercises 21
UNIT 5 22
Text CAM and Applications 22
Reading Material NC Machines 24
Exercises 26
SECTION 2 Electric Circuits and Electronic Technology 28
UNIT 6 28
Text Basic Electricity and Magnetism 28
Reading Material Electricity Produced from Magnetism 31
Exercises 32
UNIT 7 34
Text Direct-Current Circuits 34
Reading Material Parallel Circuits:Voltage Relations 37
Exercises 39
UNIT 8 41
Text Transformers 41
Reading Material Operation Under Load 44
Exercises 45
UNIT 9 47
Text Electric Power 47
Reading Material Measurement of Electric Power and Energy 51
Exercises 52
UNIT 10 53
Text Electrical Instruments and Electrical Measurements 53
Reading Material Measurement of Resistance 55
Exercises 56
SECTION 3 Computer Applications 58
UNIT 11 58
Text Why Learn About Computers? 58
Reading Material Computers in the Home and Workplace 60
Exercises 61
UNIT 12 62
Text Memory 62
Reading Material Data and Programs 64
Information 64
Exercises 65
UNIT 13 67
Text Starting Your Computer 67
Reading Material Using the Windows Operating System 69
Using the Internet and World Wide Web 69
Exercises 70
UNIT 14 71
Text Software 71
Reading Material Systems Software 73
Application Software 74
Exercises 74
UNIT 15 76
Text What is a Network? 76
Reading Material Communications and Networks 78
Communications Protocols 79
Exercises 79
SECTION 4 Meters and Machine Control 81
UNIT 16 81
Text Four Important Controlled Variables 81
Reading Material Differential Pressure Flow Meters 82
Exercise 83
UNIT 17 84
Text Thermometer 84
Reading Material Resistance Thermometer 85
Exercises 86
UNIT 18 87
Text Automatic Control Systems 87
Reading Material Manual and Automatic Control Systems 88
The components of Automatic Control Systems 89
Exercises 89
UNIT 19 90
Text Two-position Control 90
Reading Material The Temperature Control of Steam-Jacketed Kettle 91
Exercises 92
UNIT 20 94
Text Proportional Control 94
Reading Material Rate Mode of Control 96
Exercises 96
SECTION 5 Chemical Mechanical Engineering 97
UNIT 21 97
Text Liquid Pumps 97
Reading Material The Centrifugal Pump 99
Exercises 100
UNIT 22 102
Text The Reciprocating Compressor 102
Reading Material Multistage Centrifugal Compressors 105
Exercises 106
UNIT 23 107
Text Continuously Fed Centrifuges 107
Reading Material Batch Centrifugals 110
Exercises 112
UNIT 24 113
Text Stresses in Pressure Vessels 113
Reading Material Heat Exchangers 116
Exercises 118
UNIT 25 120
Text Design of Packed Towers 120
Reading Material Agitation Equipment 122
Exercises 124
SECTION 6 Refrigeration and Air Conditioning Technology 125
UNIT 26 125
Text Air 125
Reading Material The Need of Air Conditioning 128
Exercises 129
UNIT 27 130
Text The Nature of Thermodynamics 130
Reading Material The Laws of Thermodynamics 132
Exercises 133
UNIT 28 135
Text Heat Transfer 135
Reading Material Three Fundamental Types of Heat Transfer 137
Exercises 138
UNIT 29 139
Text Mechanical Vapor Compression Refrigeration 139
Reading Material The Multipressure System 141
Exercises 142
UNIT 30 143
Text Evaporative Air Cooling 143
Reading Material Room Air Conditioners 145
Exercises 147
APPENDIX（附录一） 148
课文及阅读材料译文 148
附录二 练习答案 190
图题译文 203
参考文献 205