Preferably the resin contains at least one acidic group and more preferably at least one carboxylic acid group.

最好的树脂至少包含一个酸性组和更多的最好至少一羧酸组。

youdao

A group of polyamides formed by the condensation between an amino group of one molecule and a carboxylic acid group of another.

一类由一个分子的氨基与另一个分子的羧酸基之间，缩合而生成的聚酰胺。

youdao

An adhesive composition includes a curable resin and a porphyrin derivative, in which the porphyrin derivative has at least one carboxylic acid group that is typically pendant from the porphyrin ring.

粘合剂组合物包括可固化树脂和卟啉衍生物，其中卟啉衍生物具有通常从卟啉环伸出的至少一个羧酸基团。

youdao

And what it's used is to convert one type of group, what's called a carboxylic acid into another type of very reactive intermediate, which is called an acid chloride.

它被用来将一类被称作羧酸的化合物，转化成另外一类活性很高的反应中间体,也就是酰氯。

麻省理工公开课 - 化学原理课程节选