聚丙烯的催化剂技术不断改进。

The technology of PP catalyst improves unceasingly.

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通过测定结晶速率和动态力学损耗的方法研究了接枝对聚丙烯的结晶行为和动态力学性质的影响。

The effect of grafting on the crystallization and dynamic mechanical properties of PP have also been investigated by the determination of the crystallization rate and dynamic mechanical loss.

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在新兴的亚洲和中东，对聚丙烯的需求反映了日益增长的商品消费(无论是本身含有聚丙烯，还是用其来包装)和上升中的车辆持有率。

In emerging Asia and the Middle East, demand for polypropylene reflects increasing consumption of goods (which either incorporate polypropylene, or are packaged in it) and rising car ownership.

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