英语词汇“key telephone unit”的英英意思、用法、释义、翻译、读音、例句、短语、词组-英语词典

单词	key telephone unit
释义	key telephone unit key telephone unit [′kē ′tel·ə‚fōn ‚yü·nət] (communications) A small mounting plate with relays which performs pickup and hold switching functions in a key telephone system. AcronymsSeeKTU
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