• 聚氨称为氨基甲酸主链上含有重复氨基甲酸酯基团大分子化合物统称

    The full name of the polyurethane is the poly - urethane, which is a general designation of the macromolecular compound containing repeated amino acid ester groups.

    youdao

  • 聚氨称为氨基甲酸主链上含有重复氨基甲酸酯基团大分子化合物统称

    The full name of the polyurethane is the poly - urethane, which is a general designation of the macromolecular compound containing repeated amino acid ester groups.

    youdao

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