cymen.聚伞花序CYabbr.历年（=calendar year）CY to CY Service场到场运输cybidium species兰属植物CYNAP phenomenon细胞毒性阴性吸收阳性现象cyanogen bromide溴化氰cyclopentylamine环戊胺cyclosynchrotron同步回旋加速器Cyclorhiza majorn.南竹叶环根芹cymbidium faberi惠兰； n.；蕙兰cyclocarioside A甜茶树甙 ACyclosa informisn.畸形艾蛛