A.GCr15 B.CrL12 C.1Cr13 D.1Cr18Ni9Ti
A.≤0.08%或≤0.03% B.≤0.01%或≤0.03% C.≤0.03%或≤0.08% D.≤0.08%或≤0.01%
A.十分數(shù) B.百分數(shù) C.千分數(shù) D.萬分數(shù)