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由于电磁线圈的电源是由交流电源经单 为线圈的内、外直径(毫米),相桥式硅整流而得,所以对导磁体的涡流和
As the electromagnetic coil power by the AC power by the single coil for the inside and outside diameter (mm), phase bridge silicon rectifier derived, so the magnetic induction of eddy current and