OPNn.开
OPabbr.观测点(=Observation post)
Ophiuros exaltatusn.蛇尾草
Opadometafastigatan.举腹随蛛
ophthalmic myiasis眼蝇蛆病
Ophiolitic mrlange花岗闪长岩
Ophiorrhiza rariorn.毛果蛇根草
ophthalmochirurgia眼科手术学
ophthalmotopometry[医] 眼转动测量法
Ophthalmic symptom眼征
Ophictretagratiosan.美孔蛇尾
op-posite parity相反奇偶性