英语词汇extension bell是什么意思，extension bell的用法、释义、翻译、读音、例句、短语词组-英汉汉英翻译词典

英汉汉英翻译词典包含1679246条英汉翻译词条，基本涵盖了全部常用英语单词及常用语的翻译及用法，是英语学习及翻译工作的有利工具。

单词	extension bell
释义	extension bell　【电】分铃
随便看	vacuum tube jumping circuit vacuum tube modulator vacuum tube oscillator vacuum tube rating vacuum tube receiver vacuum tube rectifier vacuum tube register vacuum tube test set vacuum tube transmitter vacuum tube types vacuum tube voltmeter vacuum tube voltmeter circuit vacuum tubes vacuum tubes vacuum tubes vacuum tweezer vacuum tyberculin vacuum type protocter vacuum type thickener vacuum ultraviolet vacuum ultraviolet radiation vacuum ultraviolet spectrometer vacuum ultraviolet spectrometry vacuum ultraviolet spectroscopy vacuum up