Oral Rehydration Therapy口服补液疗法,口服补液治疗 ordinary telegram寻常电报 Organization for Rehabilitation through Training通过锻炼的康复组织 Order of Railroad Telegraphers铁路报务员通知单 on going reliability test持续信赖性测试 Organization for Educational Resources and Technological Training组织的教育资源和技术培训 Operation Restore Trust手术恢复信任 Operational Reliability Test运行可靠性测试 Object Relations Technique对象关系的技术 Operational Readiness Test战备检查 Operational Readiness Training战备状态训练 Operation Room Technician (medical)手术室技术员(医疗) Operationally Ready Time选好时间 Origin Rail Terminal铁路码头起源 Optical Relay Tube光学继电器管