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. 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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3. 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。
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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. 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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6. This paper briefly described the formation cause of polymorphism of syndiotactic polystyrene (sPS) and the method for analyzing the polymorphism of sPS.
概述了间规聚苯乙烯多晶的成因及分析方法。
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7. Peroxide crosslinking of syndiotactic polypropylene (sPP) in the presence of trimethylolpropane trimethacrylate (TMPTMA) was studied by using DSC method.
用DSC对三羟甲基丙烷三甲基丙烯酸酯（TMPTMA）存在下的间规聚丙烯过氧化物交联进行了研究。
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8. Peroxide crosslinking of syndiotactic polypropylene (sPP) in the presence of trimethylolpropane trimethacrylate (TMPTMA) was studied by using DSC method.
