men.a.di.onen.(名词)A yellow crystalline powder, CH 8O 2, used in medicine as a vitamin K supplement. 甲萘醌:黄色结晶状粉末,CH 8O 2,在药物中用作补充维生素K 来源:me(thyl) me(thyl)na(phthalene) na(phthalene)di- di--one -one