... 内部通孔 ivh inner via hole 内部通信 communication interior; intercommunication; interior communications 内部通信的 intercommunicating ...
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IC Interior Communications Room 内部通讯室
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Sound-powered telephones and interior communications systems make it possible for a control officer to talk to whole groups of men at many stations.
声力电话及内部通讯系统使得火控官可以和分散在各舱室的全体组员通话。
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