Opeln.欧宝(德国汽车品牌)
opev.开放;自由进出(动词open的古体)=open.
operculum orbitale岛盖额部
operculum syndrome被盖综合征
opereative therapy手术治疗
operculum laryngis喉盖
oper-ating panel控制盘, 操纵盘
operculum frontale额叶岛盖
oper-type bearing非密封轴承
operstion infection感染
Operophtera brumatan.秋尺蛾
operculum genetalis生殖厣