-azine; heterocyclic compound containing nitrogen in their ring such as pyridine 吡啶 (bǐ dìng) C5H5N, pyrazine 哒嗪 (dā qín) C4H4N2 or pyrimidine 嘧啶 (mì dìng) C4H4N2
Meaning
āqína1 qin2
-azine
heterocyclic compound containing nitrogen in their ring such as pyridine 吡啶bǐ dìng C5H5N, pyrazine 哒嗪dā qín C4H4N2 or pyrimidine 嘧啶mì dìng C4H4N2