(铸件的)缩孔，缩管铸件上的锥形孔，用来在冷却时排气用

(铸件的)缩孔，缩管铸件上的锥形孔，用来在冷却时排气用的英文翻译

基本释义

• A cone - shaped cavity in a steel ingot,formed during cooling by escaping gases.