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1·The linear relationship between the gas phase standard enthalpies of formation and the substituent constants is discussed.

讨论了气态摩尔标准生成焓与取代基常数间的线性关系。

2·The substituent effect was discussed.

并对取代基效应作了解释。

3·Conclusion 24-substituent of sterol affects the absorption of sterols.

结论甾醇结构中的24位取代基影响甾醇的吸收。

4·This invention relates to a preparation method of substituent glutaric acid anhydride.

本发明涉及取代基戊二酸酐的制备方法。

5·Furthermore, the migration ability of substituent of ketone had a significant impact on selectivity.

同时，迁移集团的迁移能力也对反应的选择性有很大的影响。

6·The tacticity of polymers is mainly influenced by the polarity of substituent group of vinyl monomer.

作者认为影响聚合物等规度的因素主要是取代基的极性效应。

7·The results showed that chloric substituent in polymer chains prevented the chains from further chlorination.

结果表明，大分子链上的氯取代基对分子链进一步氯化起阻碍作用；

8·The invention discloses a preparation method of a benzofuran ketones compound containing indoles substituent groups.

一种含吲哚类取代基的苯并呋喃酮类化合物的制造方法。

9·These clusters show different fluxional behaviour and ligands according to various substituent around the metals of osmium.

根据羰基配体取代基的不同，该类簇合物中小分子的移动种类及方式也有所不同。

10·The absorption, emission maximum and the fluorescence lifetime changed as the Hammett substituent constant in folding linear.

最大吸收、最大发射、及荧光寿命与取代基的哈密顿取代基常数呈折线关系。