cyalen.周期CYabbr.历年（=calendar year）cyclopentylpropionate环戊丙酸盐[酯]Cymbium olla Linnaeusn.欧拉涡螺(骨螺超科；涡螺科)Cycas parz hihuaensis攀枝花苏铁Cynops chenggongensisn.呈贡蝾螈cyano complex of iron铁的氰合配合物Cyperus rotundus L.莎草Cyathostomum labiatum有唇杯口线虫, 小唇杯口线虫Cymbidium macrorhizonn.大根兰cytidine triphesphate三磷酸胞苷cyclocopolymerizationn.成环共聚合