UNIT 1 世界机械工程史 1
SECTION ONE DIALOGUE 2
I'm Fond of my Major 2
SECTION TWO READING 4
History of Mechanical Engineering in the World 4
SECTION THREE GRAMMAR 8
定语从句 （一） 8
SECTION FOUR EXERCISES 9
UNIT 2 机械工程制图 11
SECTION ONE DIALOGUE 12
Do you like Engineering Drawing Class? 12
SECTION TWO READING 14
Mechanical Engineering Drawing 14
SECTION THREE GRAMMAR 17
定语从句（二） 17
SECTION FOUR EXERCISES 18
UNIT 3 初加工工艺 20
SECTION ONE DIALOGUE 21
I Want to Visit a Steelworks 21
SECTION TWO READING 23
Primary Processes 23
SECTION THREE GRAMMAR 27
定语从句（三） 27
SECTION FOUR EXERCISES 28
UNIT 4 精加工工艺 30
SECTION ONE DIALOGUE 31
Would You Mind Moving On To Another Job? 31
SECTION TWO READING 33
Secondary Processes 33
SECTION THREE GRAMMAR 37
被动语态（一） 37
SECTION FOUR EXERCISES 38
UNIT 5 金属材料的类型 40
SECTION ONE DIALOGUE 41
Where are All Metals Found 41
SECTION TWO READING 43
Types of Metal Materials 43
SECTION THREE GRAMMAR 47
被动语态（二） 47
SECTION FOUR EXERCISES 48
UNIT 6 机器元件 50
SECTION ONE DIALOGUE 51
Lubricants Belong to Machine Elements 51
SECTION TWO READING 53
Machine Elements 53
SECTION THREE GRAMMAR 56
被动语态（三） 56
SECTION FOUR EXERCISES 57
UNIT 7 切螺纹 59
SECTION ONE DIALOGUE 60
Cherish Your Screws and Bolts! 60
SECTION TWO READING 62
Metal Threading 62
SECTION THREE GRAMMAR 65
被动语态（四） 65
SECTION FOUR EXERCISES 66
UNIT 8 金属加工 68
SECTION ONE DIALOGUE 69
Tell me What's Metalworking 69
SECTION TWO READING 71
Metalworking 71
SECTION THREE GRAMMAR 74
被动语态（五） 74
SECTION FOUR EXERCISES 75
UNIT 9 车床 77
SECTION ONE DIALOGUE 78
This Lathe Picture is too Old to See Clearly! 78
SECTION TWO READING 80
Lathe 80
SECTION THREE GRAMMAR 84
被动语态（六） 84
SECTION FOUR EXERCISES 85
UNIT 10 铣床 87
SECTION ONE DIALOGUE 88
May I Have a Refund on the Milling Machine? 88
SECTION TWO READING 90
Milling Machine 90
SECTION THREE GRAMMAR 93
被动语态（七） 93
SECTION FOUR EXERCISES 94
UNIT 11 切割工具 96
SECTION ONE DIALOGUE 97
He's Making Power Saws 97
SECTION TWO READING 99
Cut-off Tools 99
SECTION THREE GRAMMAR 104
分词（一） 104
SECTION FOUR EXERCISES 105
UNIT 12 热处理工艺 107
SECTION ONE DIALOGUE 108
It's Has Gone Through the Heat Treatment 108
SECTION TWO READING 110
Heat Treatment Processes 110
SECTION THREE GRAMMAR 113
分词（二） 113
SECTION FOUR EXERCISES 114
UNIT 13 测量 117
SECTION ONE DIALOGUE 118
IWant Something Plainer 118
SECTION TWO READING 120
Measurement 120
SECTION THREE GRAMMAR 124
分词（三） 124
SECTION FOUR EXERCISES 125
UNIT 14 数控机床概述 127
SECTION ONE DIALOGUE 128
You are so Considerate! 128
SECTION TWO READING 130
Numerical Control Machine 130
SECTION THREE GRAMMAR 134
分词（四） 134
SECTION FOUR EXERCISES 135
UNIT 15 数控车床的结构 137
SECTION ONE DIALOGUE 138
I'm Afraid They Couldn't 138
SECTION TWO READING 140
The Structure of a CNC Lathe 140
SECTION THREE GRAMMAR 145
分词（五） 145
SECTION FOUR EXERCISES 146
UNIT 16 数控车床的操作 148
SECTION ONE DIALOGUE 149
Why Haven't I Figured out? 149
SECTION TWO READING 151
CNC Lathe Operation（1） 151
SECTION THREE GRAMMAR 156
分词（六） 156
SECTION FOUR EXERCISES 157
各单元练习题（Section Four）答案 158
参考文献 161