The teaching methods of the course of design of plastic shape-molding have been explored and practiced from the teaching concept, teaching method, teaching means, etc.
针对《塑料成型模具设计》课程的特点和目前的教学条件，从教学观念、教学方法、教学手段等方面进行了一系列探索与实践。
While profile, the cross section was composed of annulus and rectangle, was extruded, the flow mechanism the plastic melt in the die was analyzed and the design method of die land was given.
本文分析了异型(圆环型与矩形的组合)材成型时塑料熔体在模头中的流动机理，并给出了模口成型长度的设计方法。
The flow condition of plastic melt in the extrusion die is analysed in this paper, and the design method of the die lip-length for plastic plate extrusion is also given.
分析塑料熔体在板模机头中的流动状况，并给出板模机头模唇设计方法。
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