英语词汇“switching-through relay”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	switching-through relay
释义	switching-through relay switching-through relay [′swich·iŋ ¦thrü ′rē‚lā] (electricity) Control relay of a line-finder selector, connector, or other stepping switch, which extends the loop of a calling telephone through to the succeeding switch in a switch train.
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