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白油的断链为一级反应。The reaction of chain scission is first-order reaction.

而材料在氧化的同时,会使分子产生断链。In the mean time, the oxidation of the material will cause chain scission.

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DNA拓扑异构酶与断开DNA链和改变其拓扑结构有关。DNA strand scission and topology changes are catalyzed by DNA topoisomerases.

研究表明,白油在热氧老化过程中主要发生断链和氧化反应。The results show that chain scission and oxidation occurs in the whole reaction.

第三部分主要研究返乡流动儿童的教育断链问题。The third part is the education of children returning from chain scission problem.

聚丙烯在加工时受热将发生大分子断链降解,致使分子量减小,熔体指数上升。PP will degrade due to heat during processing, resulting in chain scission of macromolecule, reduction in molecular weight and rise in MI.

用推广的裂变扩散模型研究了裂变前壳效应对粒子发射的影响。Influence of the shell effect on the emission of light particles prior to scission is explored in the framework of the Smoluchowski equation.

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表明在金属卟啉催化下,反应初期氢过氧化物的过氧键都是以均裂的方式生成相应的烷氧自由基。Alcohols generated more than ketones by the hemolytic scission of the O-O bond in the metalloporphyrin catalyzed hydrocarbon oxidation system.

发现了转动自由度在粒子发射中所起的作用对系统的激发能有一定的依赖关系。In addition, the effect of rotational degree of freedom on particle evaporation prior to scission was found to depend on the excitation energy.

分子量降低和消旋作用对温度的依赖性,是由于分子运动和笼罩效应以及重合的空间位阻效应所致。The dependence of chain scission and racemization on temperature results from molecular motion, "cage effect" and steric hindrance during recombination.