... retort; talk back; answer back 还口 talk back circuit 对讲电路 talk back hailer 一种驾驶台与船舶各部联系的传声设备 ...
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talk-back circuit 联络电路
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The paper introduces a new type of common line talk back system. Complete circuit diagram and an adjusting method are presented in this paper.
文中介绍一种新型总线形式、双工通话的对讲系统，给出完整电路原理图及调试方法。
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