頻數(shù)多邊形；頻率多邊形frequencyresponse: 瞬變過程特性frequencyofuse principlele: 使用頻次原則frequencyselective receiver: 送頻受話器frequencyofjoints: 節(jié)理頻度frequencyshiftsignallling: 移頻發(fā)信下載手機詞典可隨時隨地查詞查翻譯
