反向波振盪器 bwo backward wave oscillator: 回波振蕩器,返波管振蕩器backward wave oscillator: 反向波振蕩器; 返波振蕩器; 回波振蕩器; 逆波振蕩器backward wave oscillator tube: 返波振蕩管backward-wave oscillator: 返波管振蕩器; 返波振蕩器; 回波振蕩器backward-wave oscillator tube: 返波振蕩管下載手機詞典可隨時隨地查詞查翻譯