英语词汇“loopback switch”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	loopback switch
释义	loopback switch loopback switch [′lüp‚bak ‚swich] (electronics) A switch at the end of a telephone line that is used to test the line and, when closed, reflects received signals to the sender.
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