丙纶是聚丙烯纤维的商品名称，它是由丙烯作原料经聚合、熔体纺丝制得的纤维。
Polypropylene is the trade name of polypropylene fiber, which is by the polymerization of propylene as raw material by the melt spinning of fibers obtained.
分析了聚合物熔体于口型挤出流动中粘度的压力效应。
The pressure effect of viscosity for polymer melts during die extrusion flow was analyzed.
首先，本工作开发了一基团贡献模型用于预测常压下聚合物熔体的导热系数。
The first one is a group contribution model for the prediction of the thermal conductivity of polymer melts.
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