A.25%,30% B.25%,40% C.25%,50% D.30%,80%
A.30% B.40% C.50% D.80%
A.屈服點(diǎn)最小值 B.屈服點(diǎn)最大值 C.抗拉強(qiáng)度 D.極限強(qiáng)度