基本解釋[經濟學]銅條式互換器英漢例句雙語例句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向器片間電壓分布曲線的基本公式和試驗驗證；bar commutator-更多例句詞組短語短語commutator -bar 整流條bar commutator-更多詞組專業(yè)釋義經濟學銅條式互換器