英语语法分析

The development of narrowly distributed catalysts for the ethoxylation of fatty alcohol is summarized.

介绍了近年来脂肪醇乙氧基化窄分布催化剂的研究进展。

4-dioxane is a byproduct of a chemical processing technique called ethoxylation, in which cosmetic ingredients are processed with ethylene oxide.

4 -二恶烷是一个叫做乙氧基化的化学加工过程的副产品，在这个过程中，化妆品原料和环氧乙烷一起进行处理。

Ethoxylation of n_octanol catalyzed by a few of enzymes were studied and the results showed that only lipase with glycol has a certain catalytic activity.

考察了几种生物酶作为脂肪醇乙氧基化催化剂的催化活性。实验发现脂肪酶在乙二醇存在的条件下，能使环氧乙烷开环聚合生成脂肪醇聚氧乙烯醚。