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)
Ostwald dilution law奥斯特瓦尔德稀释定律,奥斯托惠尔稀释律
Osteoclasis of tibia胫骨折骨术
ostium internum uteri[医] [子宫]颈管内口
Osteomeles subrotundan.圆叶小石积
Ostrum Furst syndrome奥-弗二氏综合征