oa

OA Orbital Analyst 轨道分析师

OA Organization and Administration 组织和管理

OA Oral Administration (medicine and educational testing) 口服药物和教育测试)(

OA Oversight & Performance Assurance 监督和性能的保证

OA Office of AIDS (California) 办公室的艾滋病(加州)

OA Operations Agreement (NASA) (NASA)的运作协议

OA ocular albinism 眼白化病

oa ovalbumin 卵白蛋白,卵清蛋白

OA Office of Administration 行政办公室

OA Open Access 开架阅览

OA Olympic Airways 奥林匹克航空公司

OA Orthogonal Array 正交阵列

oa oxalic acid 草酸,乙二酸

oa oral airway 经口呼吸道

OA Overeaters Anonymous Overeaters“无名氏”

OA Order of Australia 澳大利亚的订单

OA Outside Air 室外空气

OA Objective Area 目标地域

OA Outside Assistance 外援

OA Operational Availability 工作可用性