Unit 1 1
Section Ⅰ Lead-in 1
A Watching 1
B Speaking 1
C Listening 3
SectionⅡ Reading 7
Kinds of Steel 7
The Development of Electronics 10
Internet 13
Section Ⅲ Translation 17
科技英语文章的特点（一） 17
Section Ⅳ Writing 19
Online Shopping 19
Section Ⅴ Language Skill Development 21
虚拟语气 21
Unit 2 27
Section Ⅰ Lead-in 27
A Watching 27
B Speaking 27
C Listening 28
Section Ⅱ Reading 32
Machine Elements 32
Electronic Components 36
New Network Technology 41
Section Ⅲ Translation 44
科技英语文章的特点（二） 44
Section Ⅳ Writing 47
How Should Parents Help Children to Be Independence？ 47
Section Ⅴ Language Skill Development 50
动词不定式 50
Unit 3 54
Section Ⅰ Lead-in 54
A Watching 54
B Speaking 54
C Listening 55
Section Ⅱ Reading 59
Types of Bearings 59
Alternating Current 64
Global System for Mobile Communications 66
Section Ⅲ Translation 70
科技术语的翻译 70
Section Ⅳ Writing 71
Due Attention Should Be Given to Spelling 71
Section Ⅴ Language Skill Development 73
动名词 73
Unit 4 79
Section Ⅰ Lead-in 79
A Watching 79
B Speaking 79
C Listening 80
Section Ⅱ Reading 84
Lathe 84
Circuits 88
Evolution of Network 91
Section Ⅲ Translation 94
科技英语中一些常用的结构与表达 94
Section Ⅳ Writing 95
Creating a Green Campus 95
Section Ⅴ Language Skill Development 97
分词 97
Unit 5 105
Section Ⅰ Lead-in 105
A Watching 105
B Speaking 105
C Listening 106
Section Ⅱ Reading 110
Machines Using NC 110
Digital Circuits 118
Motorola and Mobile Communication 122
Section Ⅲ Translation 126
科技英语中倍数增减（包括比较）的汉译 126
Section Ⅳ Writing 127
Free Admission to Museums 127
Section Ⅴ Language Skill Development 129
名词性从句 129
Unit 6 135
Section Ⅰ Lead-in 135
A Watching 135
B Speaking 135
C Listening 136
Section Ⅱ Reading 140
Dimension and Tolerance 140
Transformer 144
Communications and Communication System 146
Section Ⅲ Translation 149
定语从句的汉译 149
Section Ⅳ Writing 150
Limiting the Use of Disposable Plastic Bags 150
Section Ⅴ Language Skill Development 153
定语从句 153
Unit 7 157
Section Ⅰ Lead-in 157
A Watching 157
B Speaking 157
C Listening 158
Section Ⅱ Reading 163
Computer-Aided Design（CAD） 163
How Does a Liquid Crystal Display TV Work？ 166
Introduction of CPS 170
Section Ⅲ Translation 173
状语从句的译法 173
SectionⅣ Writing 177
Recreational Activities 177
Section Ⅴ Language Skill Development 179
状语从句 179
Unit 8 183
Section ⅠLead-in 183
A Watching 183
B Speaking 183
C Listening 184
Section Ⅱ Reading 188
Machining Centers 188
Component Testing 193
Introduction to Digital Signal Processing 196
Section Ⅲ Translation 200
科技英语中长难句的翻译 200
Section Ⅳ Writing 201
What Electives to Choose 201
Section Ⅴ Language Skill Development 203
倒装 203