基本解释[經濟學]銅條式互換器英汉例句雙語例句Basic formulas for the calculation of bar to bar voltage distributing curve of DC motor commutator are derived and test-verified.文中導出了計算直流電機換曏器片間電壓分佈曲線的基本公式和試騐騐証；bar commutator-更多例句词组短语短語commutator -bar 整流條bar commutator-更多词组专业释义經濟學銅條式互換器