例句 /

Abstract: Introduced is the experience in replacing atmosperic riser with thermal-isolation riser and improving pouring system to eliminate shrinkages.

Abstract: Introduced is the experience in replacing atmosperic riser with thermal-isolation riser and improving pouring system to eliminate shrinkages.

文摘:介绍了用保温冒口代替大气压力冒口,改进浇注系统解决铸件缩孔问题的经验。