The relative molecular weight distribution and the concentration of organic matters had significant effect on coagulation removal of iron.
有机物的分子量分布和浓度对混凝除铁有很大影响。
Objective: to determine the relative and absolute molecular weight (Mw) as well as Mw distribution of chondroitin sulfate sodium, and to compare the two analysis methods.
目的：采用两种方法测定硫酸软骨素钠的相对和绝对分子质量及其分布，并对两种分析方法进行比较。
The metallocene polyethylene with a relative molecular weight distribution higher than 4 could be obtained by using the combined catalyst having 1 : 1 molar ratio of APE-1/APE-2.
高压聚合试验中 负载型APE-1和APE-2催化剂按照摩尔 比1：1复配，可以得到相对分子质量分布大于4的茂金属聚乙烯。
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