[電學(xué)] 電子束開關(guān)管 beam switching tube: 射束轉(zhuǎn)換器; 射線開關(guān)管beam-switching tube: 電子束開關(guān)管magnetic beam switching tube: 磁旋管magnetic beam-switching tube: 磁旋管magnetron beam switching tube: 磁控電子束開關(guān)管; 磁控注型開關(guān)管下載手機(jī)詞典可隨時隨地查詞查翻譯