以下为句子列表：
英文: Abstract: The mathematical model that describes the reaction kinetics and molecular weight distribution for the polycondensation reaction process is developed by methods of reaction extent and generation function,in which an industrial process of poly(eth
中文: 文摘:以一个工业化聚酯生产过程为例，将反应度法和生成函数作为工具，建立了描述此类缩聚反应过程的反应动力学及其分子量分布的数学模型，并介绍了求解数学模型的方法。
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英文: Using 80% dipropylene glycol and 20% 1,4-butanediol as molecular regulator could also narrow the molecular weight distribution and reduce the amount of smaller molecules in product.
中文: 研究还发现分子量调节剂对产品分子量分布有较大影响，采用混合型调节剂也能够使分子量分布变窄并降低小分子物质含量。
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英文: Waxes for sealant : This series product divides the wax for sealant tape and the wax for container primer , the former can provide the reasonable molecular weight distribution and the normal and isomerism proportion , obviously enhances the sealant tape t
中文: 密封胶用蜡系列：本系列产品分密封胶条用蜡和集装箱底漆用蜡，前者能提供合理的分子量分布和正异构比例，明显提高胶条的抗氧化能力；后者具有平缓的粘温曲线，改善目的产品的附着性、流挂性能和耐侯能力。
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