Cyss齐斯CYabbr.历年（=calendar year）cycloalkanoates环烷金属化合物cylindrosarcoma圆柱肉瘤Cydia coiferanan.松枝小卷蛾Cytology of CSF脑脊液细胞学Cymbella asperan.粗糙桥弯藻cyanopyrimidinen.氰基嘧啶cycloadiphenine六氢解痉素(解痉药)Cycloxilic acid环烃氧醛酸Cytotoxin venom细胞毒素Cyclosonis caiin.多耳毛蕨