Cydian.小卷蛾属
CYabbr.历年(=calendar year)
cyanogen poisoning氰中毒
cyclochloroguanidum环氯胍
Cypa pallens enodisn.齿缘褐天蛾
Cymbella perpusillan.极小桥弯藻
Cyclobalanopsis rexn.大果青冈
Cymbidium iridiodes黄蝉兰
Cymbella ventricosan.偏肿桥弯藻
Cyperus malaccensisn.茳芏
cyanethyl cellulose氰乙基纤维素
cyclohexyl acrylate丙烯酸环己酯