... two-way receiver 交直流两用收音机双频道接收机 two-way repeater 双向增音器 two-way reversing switch 双向转换开关 ...
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subscriber line two-way repeater 用户线双向增音机
two way repeater 双向增音机
rigid two-way repeater 双向刚性增音机
su criber line two-way repeater 用户线双向增音机
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Telegraph repeater. One-way simplex, two-way simplex, or duplex operation can be specified.
电报中继器。可指定为单向单工、双向单工或双工运行。
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