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)osteotome for knee resection膝关节切除骨刀osteochondrosis of os calcis跟骨结节骨软骨病Osteosarcoma/chemotherapy骨肉瘤／化学疗法osteosarcoma/drug therapy骨肉瘤/药物疗法osteoarthrosis interspinalis[医] 椎间骨关节病osteomyelitic sequesetration骨髓炎死骨形成ostium ductus nasolacrimalis鼻泪管口osteitis tuberculosa cystica[医] 囊状结核性骨炎, 囊状多发性结核性骨炎osteocartilaginous exostosis骨软骨性外生骨疣osteosclerosis myelofibrosis骨髓纤维性骨硬化