英语语法分析

An amine or amino resin is the alkylated reaction product of urea or melamine and formaldehyde.

含胺基或氨基树脂是尿素或三聚氰胺和甲醛烷基化反应产品。

The results showed that thiophene and its derivatives could be mono-alkylated with 1-hexene easily, and their conversion was close to 100% under experimental conditions.

结果发现，它们进行一次烷基化反应的能力都比较强，在实验条件下转化率几乎都达到了100%。