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Terms for subject Telecommunications containing direct current | all forms | exact matches only | in specified order only
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direct current blocking隔直流
direct current clamp diode直流钳位二极管
direct current dialling直流拨号
direct current insertion直流插人
direct current insertion插人直流分量
direct current interruption直流断路
direct current reinsertion直流分量恢复
direct current restoration直流恢复
direct current restoring circuit直流成分恢复电路
direct current ringing直流振铃
direct current signal直流信号
direct current signaling直流信令
direct current supply直流电源
direct current supply直流供电
direct-current ringer直流振铃器
polar direct-current system双流制
polar direct-current system极化直流制