CH 2 groups were replaced by NH or o and vice versa, nitro groups became carboxylicacids and amides, OH groups became fluorine atoms; the list is extensive.
甲烷2组改为NH或O和反之亦然，硝基成为羧酸和酰胺，OH基团成为氟原子，该名单是广泛的。
2
By this method, more than forty carboxylicacids were detected in coal gasification wastewater and quantitatively determined.
用本方法检出煤气化废水中的羧酸类化合物四十余种，并进行了定量测定。
3
Phenols, aldehydes, ketones, quinones, carboxylicacids and many other important organic intermediates for fine chemicals can be obtained by oxidizing aromatic compounds.