“polyurethane resin”的概念、定义、翻译、参考文献-科学参考

单词	polyurethane resin
释义	polyurethane resin Encyclopedia 工学热固性树脂释 polyurethane resin聚氨酯树脂由多异氰酸酯与大分子多元醇，以及扩链剂（小分子多元醇或胺）等逐步加成聚合而成，主链上含有─HNCOO─或─HNCONH─重复链节，由具有模块化结构特征的硬段和软段组成。又称聚氨酯材料。全称聚氨基甲酸酯。
随便看	sheaf of complexes sheaf of curves sheaf of differential operators sheaf of differentials sheaf of finite type sheaf of functions sheaf of germs sheaf of germs of analytic fanction sheaf of germs of divisors sheaf of germs of functions sheaf of groups sheaf of hyperfunctions sheaf of ideals sheaf of lines sheaf of meromorphic functions sheaf of modules sheaf of parallel lines sheaf of planes sheaf of regular functions sheaf of relations sheaf of rings sheaf of semigroups sheaf of sets sheaf of spheres sheaf of total quotient ring

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