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1、第三单元:transistor晶体管emitter发射极collector集电极basen.基极capacitor电容gain增益couple耦合impedance阻抗current电流filter滤波器oscillatorn.振荡器comparator比较器amplification放大offset偏移swing摇摆invert颠倒saturation饱和度IC=Integratedcircuit集成电路commonemittercircuit共射级电路loadresistor负载电阻inserieswith与...
2、....串联shortcircuit短路op-amps=operationalamplifiers运算放大器differentialamplifier差分放大器Analogcircuit模拟电路thevoltageatthenon-invertinginput通向输入端电压thevoltageattheinvertinginput反相端输入电压第八单元：telecommunication电信telephony电话switchboard交换台electromechanical电机的crossbar纵横analog模拟re
3、peater转发器quadrature正交hierarchy分层protocol协议compatibility兼容性interconnect相互连接cellular蜂窝状的spectrum频谱subscriber用户copper铜dialingpulse拨号脉冲radio-relaytransmission无线电中继器high-frequency高频very-high-frequency甚高频ultra-high-frequency超高频quadratureamplitudemodulation正交幅度调节stored
4、-programcontrol存储程序控制pulsecodemodulation脉冲编码调制open-system-interconnection开放系统互联localareanetworks局域网convergeon集中于beregardedas被认为是aslongas只是stepbystep步进制electronicswitch电子交换机long-distance-network长途网dialingpulse拨号脉冲radio-rely无线电中继civilcommunicationsatellite民用通信卫星di
5、gitalmicrowave数字微波packetswitching分组交换datacommunication数据通信dial-upterminal拨号终端hostcomputer主计算机mobilecommunication移动通信televisionprograms电视节目opticalfiber光纤theAmericanStandardCodeforInformationInterchange美国信息标准代码theInternationalOrganizationofStandardization国际标准组织第九单
6、元:numericaladj.数值的aliasingn.混叠现象reciprocaladj.互惠的，倒数的；n.倒数precedev.领先(于),在…之前,先于digitizationn.比例,均衡,部分;vt.使成比例,使均衡,分摊smoothingn.平滑(滤波)infiniten.无限,无穷大;adj.无穷的,无限的erroneousadj.错误的,不正确的basebandn.基带deducevt.推导,演绎spectrumn.光谱,频谱incrediblyadv.难以置信的;可疑的budgetn.预算;vi.做
7、预算,编入预算trickn.窍门,诀窍,恶作剧,诡计,骗局;vt.欺骗,哄骗simultaneouslyadv.同时地simulationn.模拟emulationn.仿真,效法;竞争alternativen.二中选一,可供选择的办法;adj.选择性的,二中选一的reconfigurableadj.可重新配置的,可重构的iterativeadj.反复的,重复的,迭代的foundryn.主张,建议,陈述,命题impedimentn.妨碍,阻碍,障碍物encumberv.阻碍,拖累compatibilityn.[计]兼容性
8、embracevt.拥抱,包含;vi.拥抱;n.拥抱appliancen.用具,器具sampleandholdcircuit采样保持电路samplinginterval(period,frequency)采样间隔(周期,频率)Nyquisttheorem奈奎斯特定理holdtime保持时间anti-aliasingfilter抗混
