sink head

基本解释凹陷(铸疵)

网络释义

1)sink head,凹陷(铸疵)2)depression,外缩孔，凹陷(铸疵)3)foundry defects,铸疵，铸造缺陷4)push-up,模面挤凹(铸疵)5)pull down,胀陷，上模剥砂(铸疵)6)dolly dimple,小凹陷<铸铁搪瓷缺陷>