wangqunfeng1979 發(fā)表于 2012-2-5 17:31 & ]. O9 Z6 W( l7 W+ ]5 c; g+ y/ J! f 1.電磁閥線圈質(zhì)量不好 ) }2 [! Y) Q% Z" _8 p2.電磁法阻力太大