[通信]
open-wire carrier system
... 明线载波通信 open-wire carrier communication 明线载波系统 open-wire carrier system 明语 通讯nplain language ...
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短语
明线载波通信系统
open-wire carrier communication system
明线载波电话系统
open wire carrier telephone system
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open-wire carrier system
wirecarriersystem
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