电信技术专业英语PDF电子书下载

Part One 3

Unit One 3

Text Digital Communications 3

Reading Material A The Technology——MANs 6

Reading Material B Digital Communications Technology 7

Reading Material C Keypad 11

Unit Two 12

Text Antennas 12

Reading Material A Networking 15

Reading Material B Electrical Engineering 17

Reading Material C UFO 18

Unit Three 19

Text A Brief History of Satellite Communications 19

Reading Material A Satellite Communications 22

Reading Material B Microwave Communications System 24

Reading Material C Communication Satellite 26

Unit Four 27

Text Data Communication 27

Reading Material A Laser 30

Reading Material B Electricity-Generation and Transport 34

Reading Material C Light Waves 35

Test Yourself Ⅰ 37

Unit Five 41

Text Amplifiers 41

Reading Material A Facsimile Transmission 43

Reading Material B Fax via Email Cuts Costs 46

Reading Material C Water 46

Unit Six 48

Text Analog Communications 48

Reading Material A Facsimile Equipment 50

Reading Material B Video Conferencing 53

Reading Material C Pollution and Enviourament 53

Unit Seven 55

Text Semiconductors 55

Reading Material A Pulse Code Modulation 58

Reading Material B Communication Satellite Systems 61

Reading Material C A Trick for Trouble-shooting 62

Unit Eight 63

Text Optical Communications 63

Reading Material A Optical Fiber Communications 66

Reading Material B Put Your Business on the Internet 69

Reading Material C Laser and Communication 70

Test Yourself Ⅱ 71

Unit Nine 75

Text Electromagnetic Radiation 75

Reading Material A The Electro-Magnet 78

Reading Material B The Changing Role of the PBX 79

Reading Material C Crisis of Energy 82

Unit Ten 83

Text Electrical Measurements 83

Reading Material A Modern Means of Communication 85

Reading Material B ISDN 87

Reading Material C New Changing in Our Living 90

Unit Eleven 92

Text Digital Signal Processors and Its Applications 92

Reading Material A Speech Synthesis 96

Reading Material B Speech Recognition 98

Reading Material C Great Lakes 99

Unit Twelve 100

Text Modern Role of Cryptography 100

Reading Material A An Initial Hint on Foundations of Cryptography 104

Reading Material B Basis of Information Security 105

Reading Material C Saving Earth 106

Test Yourself Ⅲ 107

Unit Thirteen 111

Text Communication Network 111

Reading Material A Future Network Architectures and Their Services 114

Reading Material B Key Factors in Communication Network Evolution 116

Reading Material C Fresh Water 117

Unit Fourteen 119

Text Signal and System 119

Reading Material A Overview of Specific Systems(1) 124

Reading Material B Overview of Specific Systems(2) 125

Reading Material C Ecology 126

Unit Fifteen 127

Text Introduction of ISDN 127

Reading Material A Broadband ISDN 129

Reading Material B Network Management 133

Reading Material C Inner Ear 134

Unit Sixteen 135

Text Characteristics of Communication Channels 135

Reading Material A How Computer Viruses Spread 138

Reading Material B Using a Mouse 141

Reading Material C Microprobe 143

Test Yourself Ⅳ 144

Final Test(A) 147

Final Test(B) 151

Part Two 157

课文与部分阅读材料参考译文 157

Appendix Ⅰ "An overview of what make up an information system:people,procedures,software,hardware and data" 179

Appendix Ⅱ Vocabulary 184

Appendix Ⅲ Terminology Practice and Applications 210

Appendix Ⅳ The following is a list abbreviations which appear in the text 228

Appendix Ⅴ Abbreviations for Network 231

Appendix Ⅵ Terminology for Electronics and Communications 244

参考文献 264