Automotive Oil Change Association汽车石油换协会 Army Otter Caribou Association军队水獭驯鹿协会 American Oil Chemists Association美国石油化学协会 Acousto Optic Cell ArrayAcousto视神经细胞排列 Art of Construction Australia澳大利亚的建设 American Osteopathic College of Anesthesiologists美国骨病麻醉师学会 Association for Ophthalmic Cooperation to Asia对亚洲协会眼科合作 Associate of the Ontario College of Art联想的安大略大学的艺术 Association Outstanding Chapter Award协会优秀章奖 Australian Olympic Coordinating Authority澳大利亚奥运会协调的权威 anomalous origin of a coronary artery冠状动脉异常的起源 advanced operator correlation algorithm先进的操作员关联算法 Antiochian Orthodox Christian ArchdioceseAntiochian正统的基督教教区 Australian Owned Companies Association澳大利亚独资企业协会 Alternate Outpatient Care Areas (temporary ambulatory care areas)交替门诊护理领域(临时日间)