high relative molecular mass 高相对分子质量 high-molecular mass polycarbosilane 高分子量聚碳硅烷 ultra-high relative molecular mass 超高相对分子质量 .
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ultra-high relative molecular mass 超高相对分子质量
Ultra high relative molecular mass cross-linked alkene polymer was synthesized by bulk polymerization using metal complex as catalyst and 1, 5-hexadiene as cross-linking agent.
以金属配合物为催化剂、1,5 -己二烯为交联剂，采用本体聚合法合成了交联超高相对分子质量烯烃类聚合物(简称交联聚合物)。
The polyether polyols prepared by these DMC catalysts are of low unsaturation, high relative molecular mass, narrow molecular distribution compared with traditional KOH catalysts.
实验发现，用DMC催化剂合成的聚醚与用KOH催化剂合成的聚醚相比不饱和度低，相对分子质量高，相对分子质量分布窄。
Polymer: Natural or synthetic plastic-like substances having molecule in a high relative molecular mass formed by the chemical linking of many simple molecules, of the same substance.
聚合物：类似塑胶的人造或天然物体。由许多简单而属于同一种物质的分子，通过化学结合而形成，并具有较高的相对分了质量。
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