A.價格便宜 B.抗壓強(qiáng)度較高 C.承受沖擊載荷能力強(qiáng) D.鑄造性較好
A.KTH350-10 B.KTH300-06 C.HT300 D.RUT300
A.KTH350-10 B.QT500-17 C.HT300 D.HT200