1、

Polyacetaldehyde may exist in atactic, syndiotactic and isotactic forms.

聚乙醛可以以无规, 间同和全同形式存在.

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2、

Polyacetadehyde may exist in atactic, syndiotactic and isotactic forms.

聚乙醛它和聚烯烃一样,可以以无规, 间同和全同形式存在.

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3、

Isotactic diad decreases with the increase of radiation dose . Meanwhile, atactic and syndiotactic diad increases.

随着辐照剂量的增加, 全同立构含量逐渐减少,而无规立构含量和间同立构含量却逐渐增加.

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4、

The complex polymorphism and the structural characteristic of various crystal forms are reviewed in syndiotactic polypropylene.

综述间规聚丙烯复杂的多晶型现象以及各晶型的结构特点.

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5、

The research development in catalysts for Syndiotactic polymerization of styrene is re-viewed.

本文综述了制备 间规聚苯乙烯 用催化剂的研究进展.

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6、

Introduce briefly the new engineering plastics syndiotactic polystyrene , including its structure, property, processing and application etc.

简要介绍新型工程塑料间同立构结晶型聚苯乙烯的结构 、 性能 、 加工及其应用.

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7、

It was concluded from the experiment that the content of the isotactic polymer was the lest, the syndiotactic polymer was the most and the atactic polymer was between them.

由实验得到以下主要结论:PA-18降凝剂结构中全同立构聚合物含量最少,间同立构聚合物含量最多,无规立构聚合物含量介于两者之间。

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