“keyless ringing”的概念、定义、翻译、参考文献-科学参考

单词	keyless ringing
释义	keyless ringing [`kē·lǝs `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.
随便看	Gobiesociformes Gobiidae Gobioidei goblet cell gobo gob stink godet go-devil Goertler parameter goethite go gage goggles going going barrel going train goiter Golay cell gold gold-198 gold alloy Goldbach conjecture goldbeater's skin goldbeater's-skin hygrometer goldbeating Goldberg-Mohn friction

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