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polyurethane resin
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polyurethane resin
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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。
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base of a number system
base of a power
base of a roulette
base of a topological space
base of a topology
base of a trapezoid
base of a triangle
base of a uniformity
base of a vector bundle
base of a vector space
base of natural logarithms
base oil dewaxing process
base on context information fusion
Base Orcadas Station
base pair
base pair (bp)
base pairing
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base pension
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basepoint
base-point-free set
base-point-free theorem
basepoint free theorem
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