Ostan纯氢氧化钠OSTabbr.科学与技术处(=office of science and technology)abbr.作战适用性试验(=operational suitability testing)Osterreich syndrome奥斯特赖歇综合征(双侧髌骨、指发育不全)Ostertagia sinensisn.中华奥斯特线虫Ostericum sieboldiin.山芹osteoblastoclastoma破成骨细胞瘤Osteogenetic effect成骨效应osterberg cell test自平衡法Osteotomy of radius桡切骨术osteosclerotic zone骨硬化带Ostrinia orientalis亚洲玉米螟Osteoblast function骨母细胞功能