頻率計frequencymeter: 頻率計frequencyhopping spread spectrumm: 跳頻擴(kuò)展頻譜frequencymodulated cyclotron: 同步回旋加速器frequencyfunction: 頻數(shù)函數(shù) 概率密度函數(shù)frequencymodulationdeviation: 調(diào)頻頻偏下載手機(jī)詞典可隨時隨地查詞查翻譯