Oxford English Dictionary牛津英语大辞典 Original Effective Date (health insurance)原生效日期(医疗保险) Oil Energy Downstream石油能源下游 Olje- og Energidepartementet (Norwegian: Ministry of Petroleum and Energy)Olje -噩Energidepartementet(挪威的石油和能量。) Optical Edge Device光学边装置 Operations Evaluation Department业务评估部门 Operational Effectiveness Demonstration作战效能的示威游行 Office of Economic Development办公室的经济发展 Opto-Electronic Device光电子器件 Old English Dictionary古英语词典 Oracle Energy Downstream甲骨文能量的下游 Operational Environment Documentation操作环境文档 Ogretim Elemanlari DernegiOgretim Elemanlari Dernegi Oxidation Enhanced Diffusion氧化增强扩散 Operational Evaluation Demonstration运行评价示范