Cyss齐斯CYabbr.历年（=calendar year）Cyperus species莎草属Cyclosorus Link毛蕨属cycloopxygenase前列腺索内过氧化物合酶cytomegalovirusn.[微]细胞巨化病毒Cycas tanqingii潭清苏铁Cymatiumcomptumn.多彩嵌线螺cycloidal tooth摆线齿cytotrophobasts滋养细胞cycloalkylation环烷化,成环烷化作用Cytophage phage纤维粘菌属噬菌体