It is obvious th at A. C. motors are superior to D. C. motors in many appli cations.

显然，交流电机在许多应用场合比直流电机优越。

youdao

It is obvious th at A. C. motors are superior to D. C. motors in many appli cations.

显然，交流电机在许多应用场合比直流电机优越。

youdao