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)Osteospermum hybrida蓝眼菊osteoblastic induced成骨诱导Ostericum scaberulumn.疏毛山芹Ostreobium quekettiin.嚎壳藻Ostwald color circle奥斯瓦德颜色圈osteitis fragilitans脆性骨炎ostraceous psoriasis蛎壳状牛皮癣osteoprogenitor cell前生骨细胞, 骨祖细胞Osteoplasty of femur股骨成形术osteoma sarcomatosum[医] 骨肉瘤