underfeed

A modified form of sprue gate is also used on underfeed moulds and runnerless moulds.

在点浇口式的模或无流道模用到另一种式流道。

The grooved head of the sprue puller creates an effective undercut which is used to pull the sprue, or secondary sprues in underfeed designs.

流道拉料杆头部的凹槽一个有效的底切，可以用来拉出流道或者是下进料设计的二级流道。