A.剩磁法; B.復(fù)合矢量磁化法; C.連續(xù)法; D.波動(dòng)法
A.0.75mm; B.0.2mm; C.0.1mm; D.1.0mm
A.零件長(zhǎng)度大于450mm; B.零件長(zhǎng)度小于300mm; C.正方形零件; D.圓形零件