Operational Effectiveness Systems (enterprise software to manage organizational knowledge & work processes)作战效能系统(企业软件管理组织的知识和工作流程) Overall Effects Strength总体效果力度 Office of Education Services办公室的教育服务 Oceanic Engineering Society海洋工程学会 Office of Employment Security (US government)我们办公室的就业保障(政府) Offshore Engineering Society海洋工程学会 Occupational Employment Statistics职业就业统计 Old English Sheepdog古牧 Oregon Episcopal School俄勒冈州的主教学校 Optical Emission Spectroscopy光发射光谱 Order of the Eastern Star(天主教)东星会 Office of Emergency Services紧急服务处 Operations Evaluation System行动的评价体系 Occupational Exposure Standard职业暴露标准 Organization Executive Secretary (Scientology)组织的执行秘书(基督教科学派)