The crystallinity of polypropylene with different melt flow rate ( MFR ) are measured by X - ray method.

用 X 射线法测定了不同熔体流动速率下聚丙烯材料的 结晶度.

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The wave theory result is in good agreement with the result obtained by ray method.

用波动理论得出的计算结果与用射线法算得的结果完全一致.

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