瞬變過程特性phase-frequencyresponse: 相頻響應(yīng)frequencyselective receiver: 送頻受話器frequencypolygon: 頻數(shù)多邊形;頻率多邊形frequencyshiftsignallling: 移頻發(fā)信frequencyofuse principlele: 使用頻次原則下載手機詞典可隨時隨地查詞查翻譯