It shows that the solution viscosity drops and the relative molecular mass reduces with narrow distribution.
结果表明改性栲胶溶液黏度下降，相对分子质量降低且分布集中。
The effects of initiators and thermal initiation on a reaction rate, molecular weight and molecular weight distribution of products in a mass polymerization of styrene were investigated.
考察了热引发方式和不同种类、浓度下的引发剂引发方式在苯乙烯的本体聚合中对聚合反应速率和产品的分子量及其分子量分布的影响。
When polymer relative molecular mass and its distribution width are the same, the polymer displacement efficiency increases with the increment of the core permeability variation factor.
当聚合物的相对分子质量及其分布宽度相同时，随着岩心渗透率变异因数的增大，其聚合物驱采收率也随之增加。
The variation of relative molecular mass and its distribution in the process of SBR and PS (HIPS) were determined by gel permeation chromatograph (GPC).
使用凝胶渗透色谱仪（GPC）测定了丁苯橡胶（SBR）及聚苯乙烯（PS）和高冲聚苯乙烯（HIPS）在不同生产工艺条件下的相对分子质量及其分布的变化。
Submicron particles dominated the size distribution of PAHs mass, and higher molecular weight PAHs tend to distribute in finer particles and could be more dangerous to human health.
多环芳烃主要分布在亚微米级颗粒上，分子量越大的多环芳烃越趋于富集在细颗粒上，因而对健康的危害就越大。
Effects of catalyst FeSO_(4) on molecular mass distribution, contents of carboxyl and carbonyl groups, and adhesive properties of the oxidized starches were investigated.
考察了催化剂硫酸亚铁对氧化木薯淀粉的绝对分子量及其分布、羧基和羰基含量以及其胶粘性能的影响。
Effects of catalyst FeSO_(4) on molecular mass distribution, contents of carboxyl and carbonyl groups, and adhesive properties of the oxidized starches were investigated.
考察了催化剂硫酸亚铁对氧化木薯淀粉的绝对分子量及其分布、羧基和羰基含量以及其胶粘性能的影响。
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