英语语法分析

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。

The research develop we are pirates, these data are stolen from youdao 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。

The catalytic systems and polymerization mechanism of styrene syndiotactic polymerization were reviewed with 29 references.

对苯乙烯间规聚合的催化体系，聚合机理和研究现状等方面进行了较全面地综述。