It is also predicted that the orientation ratio responds to the die channel length, the channel area expanding ratio of die and plastics melt viscosity.
此外还预测了扩张机头流道长度，面积扩张比、塑料熔体粘度对取向度也有影响。
While polyester fiber is subject to different draw ratio and heating temperature during high speed spinning, its original molecular orientation and crystallinity of polyester fiber are changed.
聚酯在高速纺丝过程中，施以不同的拉伸倍数与温度，会造成纤维结晶度与取向度的变化，从而影响纤维的物理性能。
The results indicate that the difference of fracture toughness between MD and CD increases with a decrease in jet_wire speed ratio, and the main reason is stronger fibre orientation.
试验结果表明：减小浆网速比， 增强了纤维定向作用，裂缝纵向分布增加，导致纸张中纵横向断裂韧性差异增加。
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