• 根据一些朋友反应来判断这种念头成了“杀人医生”哈罗德·希普曼那样怪物

    Judging by the response I got from some of my friends, that made me as much as a monster as Harold Shipman.

    youdao

  • 丙烯酸、二甲胺、环氧氯丙烷为原料,通过尼希反应制得两性离子单体

    Amphoteric monomer is prepared with acrylic acid, dimethylamine, and chloroethanol by Mannich reaction.

    youdao

  • 丙烯酸、二甲胺、环氧氯丙烷为原料,通过尼希反应制得两性离子单体

    Amphoteric monomer is prepared with acrylic acid, dimethylamine, and chloroethanol by Mannich reaction.

    youdao

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