A.QT400-12 B.QT400-15 C.QT400-18
A.(冒口+浇注系统/铸件)*100% B.(铸件/冒口+浇注系统)*100% C.(铸件/冒口+浇注系统+铸件)*100%
A.铸造工艺图 B.零件图 C.铸件图