A.包晶反應(yīng) B.共晶反應(yīng) C.共析反應(yīng) D.包析反應(yīng)
A.W6Mo5Cr4V2 B.16Mn C.35CrMo D.2Cr13
A.1Cr18Ni9Ti B.15MnVN C.60Si2Mn D.3Cr13