The melt rheology is analyzed by using the theory of melt conveying, and using the theory of heat transfer analyzes the heat transfer in the high speed extrusion in detail.
作者从计量段的熔体输送理论着手分析熔体的流变性，应用传热学原理对高速挤出换热进行详细的数值分析。
The foaming process of NFA was studied. The results show that the melt foaming process is actually a homeostasis process of bubble nucleation, growth, rheology and collapse.
对以NFA作发泡剂的熔体发泡过程分析表明，发泡过程实际上是熔体中气泡的形核、生长、流变和破裂的动态平衡过程。
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