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)
osteogenetic fibers[医] 生骨纤维
Ostrea edulis virus食用牡蛎病毒
Ostertagia lanceatan.矛形奥斯特线虫
osteochondromatosis骨软骨瘤病
osteoporosis models骨质疏松模型
osteomalacic pelvis基利安氏骨盆