韦氏感应起电机两个放电球的极性是由两个起电盘上导电膜所带残留电荷的符号决定的,虽然起电机在某次开始工作时,导电膜上所带残留电荷的符号具有偶然性,但是导电膜上所带残留电荷的符号一旦确定,感应起电机两个放电球的极性就随之 Wechsler induction motor from the two discharge ball polarity is determined by the two residual charges on the conductive film with the symbol of the film, although the motor starting work in a certain time, the residual charge on the conductive film symbol Occasional, but the residual charge on the conductive film with the symbol once identified, the induction of the two discharge ball motor polarity will follow