For high production runs, a metal mold skin can be most economical, but at a higher up-front cost.
若进行大规模生产，使用金属模具外壳可能是最经济的，但是初始投入成本较高。
The injection mold structure of the front shell of large screen color TV is introduced, and design of side core-pulling large slide, improvement of ejector mechanism and gating method are introduced.
介绍大屏幕彩色电视机前壳注射模结构，重点介绍侧抽芯大滑块的设计， 顶出机构和进浇方法的改进。
As for the design method of front cover mold, there are some quite novel design ideas.
在这副前盖模具设计方法上，有一些比较新颖的设计想法。
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