Unit 1 Circuits and Electrical Components 1
Text A Circuits 1
Text B Electrical Components 6
Translating Skill 1派生词的翻译（一） 9
Unit 2 Instruments for Measurement 11
Text A What Do Meters Measure？ 11
Text B Oscilloscope 15
Translating Skill 2派生词的翻译（二） 20
Unit 3 Electronic Components 21
Text A Electronic Components 21
Text B Semiconductor Diode 25
Translating Skill 3 Tele-和-Phone的译法 30
Unit 4 Integrated Circuits 33
Text A Integrated Circuits 33
Text B Application of Chips 37
Translating Skill 4广告的翻译 41
Unit 5 Digital Signal Processor 44
Text A Digital Signal Processor（DSP） 44
Text B Architecture of the Digital Signal Processor 49
Translating Skill 5专业术语翻译 52
Unit 6 Power Supply 55
Text A Power Supply 55
Text B Types of Power Supply 59
Translating Skill 6新词的翻译 62
Unit 7 Synchronous Digital Hierarchy 65
Text A Synchronous Digital Hierarchy 65
Text B The Architecture of SDH 69
Translating Skill 7缩略词的翻译（一） 73
Unit 8 DWDM 76
Text A DWDM 76
Text B DWDM—Wavelength Converting Transponders，Muxponder and the Reconfigurable Optical Add-Drop Multiplexer 82
Translating Skill 8缩略词的翻译（二） 86
Unit 9 Embedded System 90
Text A Overview of an Embedded System 90
Text B Regulated Power Supply for Embedded Systems 95
Translating Skill 9数量词的翻译 100
Unit 10 PLC 103
Text A Ladder Logic 103
Text B PLC Programming 109
Translating Skill 10长句的翻译 113
Unit 11 3G 117
Text A IMT-2000 Global 3G Standard 117
Text B Implementation and History of 3G 121
Translating Skill 11被动句 125
Unit 12 ADSL 128
Text A ADSL 128
Text B Application for ADSL 133
Translating Skill 12专有名词的翻译（一） 136
Unit 13 The Wireless Web 139
Text A Second-Generation Wireless Web 139
Text B I-Mode 145
Translating Skill 13专有名词的翻译（二） 148
Unit 14 WLAN 151
Text A Wireless LANs：802.11 151
Text B New Wireless LAN Standard 156
Translating Skill 14否定的处理 159
Unit 15 Networks Applied Technology 162
Text A Home Networking 162
Text B E-Mail 167
Translating Skill 15 And引导的句型（一） 170
Unit 16 Microwave Communication 172
Text A Networking Microwave Communication 172
Text B Understanding Microwave Communication Frequencies 177
Translating Skill 16 And引导的句型（二） 181
附录1 电子信息常用缩略语 183
附录2 课文参考译文 189
附录3 练习参考答案 232
参考文献 260