Ostran.奥斯特拉(在意大利；东经 13º09' 北纬 43º37')OSTabbr.科学与技术处(=office of science and technology)abbr.作战适用性试验(=operational suitability testing)osteogenic growth polypeptideOGPosteitis cystica generalisata全身性囊状骨炎Ostwald's adsorption isothermosteogenesis imperfecta tarda[医] 延迟性成骨不全, 骨脆症Osteotomy of mandibular ramus下颌支切骨术osteochondritis of capitellum肱骨小头骨软骨炎Osteomyelitis of petrous bone岩骨骨髓炎osteomyelitis of frontal bone额骨骨髓炎ostium venae cavae inferioris下腔静脉口Osteonecrosis of femoral head股骨头坏死