OSTAC=Ocean Science and Technology Advisory Committee 海洋科学技术咨询委员会
OSTabbr.科学与技术处(=office of science and technology)abbr.作战适用性试验(=operational suitability testing)
Ostracods fossil介形类化石
osteo-odontoma[医] 釉质牙瘤
Ostend Manifesto奥斯坦德宣言
osteoenchondroma骨软骨瘤
osteofibrolipoma骨纤维脂瘤
Osteoinductivity骨诱导性
Ostrya rehderianan.天目铁木