短語詞組短語basic standard frequency 基本標準頻率basic natural frequency 基本自振周期basic NMR frequency 基本核磁共振頻率basic repetition frequency 基本重復(fù)頻率BSF Basic Standard Frequency 基本標準頻率basic driving frequency 基本超速頻率basic vibration frequency 固有振動頻率basic structural frequency 結(jié)構(gòu)基頻Basic double frequency Buck converter 基本雙頻Buck變換器 返回 basic frequency