The effect of the core pin on extrudate characteristic was little.
机筒上的销钉对挤出特性影响力很小。
In the design illustrated, the core pin is anchored by a local core-retaining plate.
图示的设计中，型芯杆是用一个局部的型芯挡板固定的。
It is important for the beginner to note that the core pin extend completely through the sleeve, and is attached to the back plate.
对于初学者来说重要的是注意型芯延伸完全穿过顶管，并且安装在底板上。
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