嘧啶

mìdìng

pyrimidine

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pyrimidine

【化】 metadiazine; pyrimidine

【医】 pyrimidine

* * *

pyridine; pyrimidine

* * *

mi4 ding4

pyrimidine C4H4N2

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嘧啶|嘧啶 [mì dìng] ► pyrimidine C4H4N2