Cyertn.西尔特
CYabbr.历年(=calendar year)
Cyrtomium macrophyllumn.大叶贯众
Cyrtophora moluccensisn.摩鹿加云斑蛛
Cyclosonis mollissimusn.多网眼毛蕨
Cyelopentanepropionate①环戊丙酸盐, ②环戊丙酸酯
Cytochrome-c oxidase细胞色素-c氧化酶
cyclohexyl isovalerate异戊酸环己酯
cycloheptatrienium ion环庚三烯鎓离子
Cyclotella shanxiensisn.山西小环藻