Heterocylic aromatics such as pyridine and pyrimidines also give a somewhat similar set of bands in the 1600 cm region . 杂环芳香族结构类如吡啶、嘧啶类化合物在1600厘米1（625微米）区域也有相似的一组谱带。
2.
Heterocylic aromatics such as pyridine and pyrimidines also give a somewhat similar set of bands in the 1600 cm region 杂环芳香族结构类如吡啶、嘧啶类化合物在1600厘米1 （ 6 25微米）区域也有相似的一组谱带。
