取向结晶(orientational crystallization)：聚合物熔体在拉伸或剪切作用下，分子链在取向同时发作的结晶进程。
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经过拉伸取向结晶后的PET薄膜氧气透过率获得下降，改善了阻隔性能。
PET film oxygen permeance ratio is dropped after crystallization through drawing tropism, modified the barrier performance.
采用＂中断法＂研究了取向硅钢二次再结晶过程中的异常长大行为，确定了二次再结晶发生的温度范围。
The secondary recrystallization and its temperature range of grain oriented silicon steel have been studied by the method of interrupting secondary recrystallization annealing.
采用X射线衍射法研究温水浸渍法脱胶和酶法脱胶过程中亚麻纤维结晶度、取向度的变化情况。
X-ray diffraction techniques were used to measure the degree of crystallinity and the orientation of flax fiber during retting.
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