narrow molecular-weight distribution

Resins with narrow molecular-weight distribution can have lower die swell, but this doesn't necessarily mean less buildup.

具有窄分子量分布的树脂会有低的出口膨胀，但这不意味着它一定有较少的口模积料。

And by improving the craftwork of precipitation of PCS, the narrow molecular weight distribution of PCS was got.

并改进了逐步沉淀分级工艺，对PCS进行沉淀分级，得到了窄分布的分级样品。

The controlling methods of polymeric dispersant with low polymerization degree and narrow molecular weight distribution were introduced.

介绍了低聚合度、窄分子量分布的聚合物分散剂的控制方法。