The flow condition of plastic melt in the extrusion die is analysed in this paper, and the design method of the dielip-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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We give lip service to the claim that we're going to die, but at some level, we don't really believe it.