This distance can be minimized, however, by sinking the sprue bush deep into the mould plate assembly as illustrated, though Ibis necessitates using a special extension nozzle.

• 当然，这个距离可以用沉入模板组合的主流道衬套来尽可能地缩短，如图所示，但是，必须使用一个特殊的延伸式喷嘴。