短語詞組短語fundamental frequency fault component 工頻故障分量frequency alias component 頻率分量utility frequency of component 部件使用頻度compositive frequency of component 部件組字頻度;組件之組郃率power frequency fault component 工頻故障分量voltage frequency time component 壓頻時間分量power -frequency capacitive component 工頻容性分量Low -frequency cable component 低頻電纜組件low -frequency swing component 低頻振蕩分量 返回 frequency component