电子信息类专业英语 第3版PDF电子书下载

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Unit 1 科技英语基础知识（一） 1

1.1 科技英语的特点 1

1.2 词汇 3

1.3 虚拟语气 6

1.4 翻译的技巧 7

Unit 2 科技英语基础知识（二） 10

2.1 关于数量（Numbers and Quantities） 10

2.2 数学符号与数学式（Mathematic Symbols and Expressions） 11

2.3 常用前缀和后缀 13

Unit 3 科技英语写作基础 20

3.1 论文标题的写作 20

3.2 论文摘要的写作及常用句型 20

3.3 论文摘要的常用句型 20

3.4 例子 21

3.5 书信（自荐信）的写作 21

Unit 4 英语写作一般知识简介 29

4.1 科技论文的组成部分 29

4.2 科技论文及其摘要的写作注意事项 32

Unit 5 Electrical Technique 40

Passage A Analog Circuit 40

Passage B Binary System and Logic Systems 46

Passage C Magnitude Locked Loop 50

Unit 6 Electronic Communications 54

Passage A Introduction to Electronic Communications 54

Passage B The Principle of PCM 64

Passage C Information Sources 70

Unit 7 Digital Modulation and Multiplexing 80

Passage A Digital Modulation 80

Passage B Binary and Multilevel Modulation 84

Passage C Multiplexing 92

Unit 8 Electromagnetic Field and Wave 94

Passage A The Foundation of Electromagnetic Field 94

Passage B Maxwell Equations 98

Passage C EBG and Metamaterials 103

Unit 9 Digital Signal Processing 105

Passage A Basic Concepts of DSP 105

Passage B Digital Signal Processors 111

Passage C Comparison of DSP and ASP 117

Unit 10 Images and Televisions 121

Passage A Digital Image Fundamentals 121

Passage B Compression/ Decompression Techniques 126

Passage C Television 131

Unit 11 Modern Switching Technique 133

Passage A The Principles of Digital Switching 133

Passage B Circuit Switching and Packet Switching 141

Passage C ATM 146

Unit 12 Optical Fiber Communication 149

Passage A The General System 149

Passage B Advantages of Optical Fiber Communication 154

Passage C Fiber-optics Communications 161

Unit 13 Microwave and Satellite Communications 163

Passage A Microwave and Satellite Communication Based Radio Systems 163

Passage B The Composite Link of Satellite Communications 169

Passage C The Mobile Satellite Channel 174

Unit 14 3rd Generation Mobile Communications 179

Passage A TD-SCDMA-a 3G Radio Access Technology 179

Passage B Summary of the Main Parameters in WCDMA 187

Passage C Planning Ahead： Technology Choices in a Complex World 190

Unit 15 Network 194

Passage A Computer Networks（1） 194

Passage B Computer Networks（2） 199

Passage C Network 210

Unit 16 Internet of Things 213

Passage A Basics about Internet of Things 213

Passage B IoT Elements 219

Passage C RFID 222

参考译文 225

参考答案 248

参考文献 264

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