pyrazineWiktionary 原文英美释义名词noun1(organic chemistry) A diazine in which the two nitrogen atoms are in the para- positions; many of its derivatives are pharmaceuticals.同族词派生词 11praziquantel·aminopyrazine·bipyrazine·chloropyrazine·favipiravir·glipizide·halopyrazine·iodopyrazine·methoxypyrazine·pyrazinyl