• 这些表面活性剂具有较高表面活性相同水基,13戊烷基一定的水性

    The results showed that these surfactants have high surface activity and same hydrophilic group, and the 1,3dioxolane ring are also hydrophilic.

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  • 根据中国锡矿床产出的地质地球化学资料划分了三种锡矿床的地球化学系列铁系列、硫系列和系列。

    Three geochemical series, i. e. , the siderophile, chalcophile and lithophile series, have been classified for tin deposits based on geological-geochemical data on tin mineralization in Chi-na.

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  • 分析石、二重性及其晶体化学依存关系。

    It is studied that the duality of lithophile and oxygenphile of aluminum and chromium, and the dependence among their crystal chemistry.

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  • 改性聚硅烷中的有机硅良好靶向作用,充分提高了聚醚链段表面迁移效率实现PP的水改性。

    The efficiency of surface migration of polyether chain segment was fully raised and hydrophilic modified on PP was implemented.

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  • 本文比较甲醇介质下,2-苯基吲哚(1)单重反应中的捕捉反应以及2-苯基-3H-吲哚-3-酮(4)的核加成反应特征。

    Trapping reactions in singlet oxygenation of 2-phenylindole (1) and nucleophilic addition reactions of 2-phenyl-3H-indol-3-one (4) both in methanolic media were studied comparatively.

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  • 吸水测试发现,固化后环预浸料平衡吸水率虽然略微上升,但由于联剂的作用,界面吸水受到明显抑制。

    Normalized water sorption by gravimetric measurement showed that the interfacial debonding time of composites with the oligomeric silane is increased significantly.

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  • 另外各类核试剂对的开得到了区域选择性反式的立体选择性都较高的开环产物

    In addition, high reactivity with various nucleophiles leads to high regioselective and trans-stereospecific ring-opening products.

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  • 另外各类核试剂对的开得到了区域选择性反式的立体选择性都较高的开环产物

    In addition, high reactivity with various nucleophiles leads to high regioselective and trans-stereospecific ring-opening products.

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