Only the constituent comonomer units of the polymers in the series of subheadings under consideration are to be compared.

只有在同级子目中的聚合物共聚单体单元才可以进行比较。

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The studies on high performance PE mainly focused on the comonomer effect and accelerating effect in the polymerization process;

高性能PE的研究主要集中在聚合过程中的“共单体效应”和“促进效应”；

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The results show that high cross-linking degree of resin can be gained as the mass fraction of comonomer N-hydroxymethyl acrylamide (NMA)and hydroxyethacrylate (HEMA)are 6% and 15% respectively.

结果表明，当共聚单体N羟甲基丙烯酰胺（NMA）和甲基丙烯酸羟乙酯（HEMA）的质量分数分别为6%和15%时，树脂的交联度较高；

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The results show that high cross-linking degree of resin can be gained as the mass fraction of comonomer N-hydroxymethyl acrylamide (NMA)and hydroxyethacrylate (HEMA)are 6% and 15% respectively.

结果表明，当共聚单体N羟甲基丙烯酰胺（NMA）和甲基丙烯酸羟乙酯（HEMA）的质量分数分别为6%和15%时，树脂的交联度较高；

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