英语词汇“local first selector”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	local first selector
释义	local first selector local first selector [′lō·kəl ¦fərst si¦lek·tər] (communications) The second portion of a line that connects to a calling line, through a line primary switch, to a local second selector and special service second selector, and returns a dial tone to the calling subscribers.
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