短語詞組短語pulsating direct current 脈動直流電;脈動直流電流;脈動直流;脈動直流電英語pulsating rectified current detail 整流過的脈動電流pulsating exciting current 脈動激勵電流pulsating g current 脈動電流pulsating rectified current 脈動整羚流;脈動整流電流pulsating dc current 脈沖直流電流pulsating electric current 脈沖電流pulsating direct current detail 脈動直流pulsating current traction motor [電]脈流牽引電動機 返回 pulsating current