噠嗪 [哒－]

Jyutping daat6 ceon4
Pinyin dā qín

Definitions (CC-CEDICT)
  1. pyrazine C4H4N2
  2. diazine
Definitions (Wiktionary)
  1. noun
    pyridazine
Definitions (Kaifangcidian)
  1. （沒有對應漢語詞彙）