The active charcoal fibre has certain adsorption to the acid radical ion in the solution. 活性炭纤维对溶液中的酸根离子有一定的吸附作用。
The results reveal that CO_2 methanation proceeded via hydrogenation of oxacid radical but not CO hydrogenation. 结果表明，二氧化碳甲烷化经过一氧化碳加氢的可能性不大，而经过甲酸根中间体加氢的可能性极大。
The scheme initially involves acylation of thiophene using a carboxylic acid to afford the acyl thiophene. 这条路线是先用羧酸使噻吩已酰化制得酸基噻吩。
Any of various natural or synthetic compounds containing two or more amino acids linked by the carboxyl group of one amino acid and the amino group of another. 肽，一种自然或人工的合成物，包括二个或二个以上氨基酸，通过一个氨基酸的酸基和另一个的羧基结合而成。
