OSTAC=Ocean Science and Technology Advisory Committee 海洋科学技术咨询委员会
OSTabbr.科学与技术处(=office of science and technology)abbr.作战适用性试验(=operational suitability testing)
osteoencephaloma[医] 骨脑样瘤
osteohydatidosis骨棘球蚴病
osteogenic fibre生骨纤维
osteogenic fiber生骨纤维
ostracode fossil介形类化石
ostium lacrimale鼻泪管口
osteopoiki losis脆弱性骨硬化
osteocalcin gene成骨素基因