relative mclecular weight的用法和樣例：
例句
- The influence of solvents,molecular weight and the content of polyethersulfone on the membrane performances was studied.
研究了聚醚碸的溶劑和相對分子質量及含量對膜性能的影響。 - The graft copolymer of cationic starch and APAM with narrow molecular weight distribution was prepared and used for dry-strengthening agent.
用陽離子澱粉接枝窄相對分子質量陰離子聚丙烯醯胺製備干增強劑。
