科技英语 第4册 Book 4 电学部分PDF电子书下载

ContentsLesson one 1

Text:The Growth of ElectroniosReading Material:Electrical and Electronic Engineeringin the FutureLesson Two 15

Text:ComputersReading Material:Computers in BusinessLesson Three 25

Text:LasersReading Material:Lasers in IndustryLesson Four 38

Text:The Binary System for ComputersReading Material:MicrocomputersLesson Five 49

Text:The Eleclron MicroscopeReading Material:The Value of TransistorsLesson Six 60

Text:Radio Links and MicrowavesReading Material:Messages by Elec？icityLesson Seven 73

Text:RefrigeratorReading Material:Construction of RefrigeratorLesson Eight 84

Text:RadioReading Material:TelevisionLesson Nine 95

Text:The Electric TelegraphReading Material:The TelephoneLesson Ten 110

Text:How a Refrigerator CoolsReading Material:Care of the RefrigeratorLesson Eleven 124

Text:Microwave OvenReading Material:Accessory EquipmentLesson Twelve 138

Text:ElectromagnetismReading Material:ElectromagnetismLesson Thirteen 151

Text:IronReading Material:Care of the IronLesson Fourteen 163

Text:Electricity and ElectronicsReading Material:Electrical EngineeringLesson Fifteen 177

Text:WasherReading Material:Design FlexibilityLesson Sixteen 190

Text:Electrons and ElectricityReading Material:ElectricityLesson Seventeen 202

Text:ElectrotechnologyReading Material:Control MotorsLesson Eighteen 217

Text:Radio Waves and Vacuum TubesReading Material:Image Orthicon TubesLesson Nineteen 231

Text:Electric Currents and CircuitsReading Material:Electric CircuitLesson Twenty 247

Text:Miniaturizati on and MicrominiaturizationReading Material:Micrc-miniaturizationAppendix 261