1)shrink bob,防缩暗冒口2)shrinker['ʃriŋkə],防缩冒口3)blind riser,暗冒口4)anti-piping compound,防缩剂，冒口保温用5)emits to repair,冒口补缩6)feeder head with Washburn core,缩颈冒口
用法例句
The qualified rate of the casting has been improved largely by using the technics measures such as the technology sub- sidy and the complicated blind riser canceling,the shaping insert enlarging,the plane chill placing and gating system reasonably designing etc.
