英语词汇“keyless ringing”的英英意思、用法、释义、翻译、读音、例句、短语、词组-英语词典-现代词典

单词	keyless ringing
释义	keyless ringing keyless ringing [′kē·ləs ′riŋ·iŋ] (communications) Form of machine ringing on a manual telephone switchboard which is started automatically by the insertion of the calling plug into the jack of the called line.
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英语词典包含2567994条英英释义在线翻译词条，基本涵盖了全部常用单词的英英翻译及用法，是英语学习的有利工具。