Heterocylic aromatics such as pyridine and pyrimidines also give a somewhat similar set of bands in the 1600 cm region.是什么意思_Heterocylic aromatics such as pyridine and pyrimidines also give a somewhat similar set of bands in the 1600 cm region.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句