頻率計(jì)heterodyne frequencymeter: 外差式頻率計(jì)bridge type frequencymeter: 電橋式頻率計(jì)compass needle type frequencymeter: 羅盤(pán)針型頻率計(jì)frequencymodulated cyclotron: 同步回旋加速器frequencyindicator: 頻率計(jì)下載手機(jī)詞典可隨時(shí)隨地查詞查翻譯