A.高頻感應(yīng)淬火B.中頻感應(yīng)淬火C.低頻感應(yīng)淬火D.工頻感應(yīng)淬火
A.調(diào)質(zhì)B.碳氮共滲C.淬火D.正火
A.刷石英粉B.鍍銅C.預(yù)留加工余量D.鍍錫