半模是半范数，模式范数。半模是模的概念的推广。
显然，每个模都是一个半模，但反之不然。
For clearly every module is a demi module and not conversely.
从半环同态的角度出发，给出了半模的一个等价定义。
In this paper, give an equivalent definition of semi-module.
我们前面已经叙述了我们需要从型芯上卸下塑件，而且塑件是跟随型芯的，因此型芯也最好设置在动半模。
We have stated previously that we need to eject the molding from the core and it therefore follows that the core, too, will most satisfactorily be located in the moving half.
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