Remote Orbital Servicing System远程轨道的维修系统 Russian Oregon Social Services俄罗斯俄勒冈州的社会服务 Remote Ocean Sensing System远程海洋温度测量系统 River Oil Spill Simulation河流溢油模拟 Rapid on Site Support快速的现场支持 Resource Ordering and Status System订购及状态系统资源 Range Operations Support Squadron距离运营支持中队 Random Origin Symbol Sequence产地标志序列随机 Russian Ocean Surveillance System俄罗斯海洋监测系统 Route di Orientamento Alla Scelta di Servizio (Italian)迪Orientamento真主安拉Scelta路线迪Servizio(意大利) Ross Systems, Inc.罗斯系统公司 Rely On Self Study依靠自学 Roadwatch One Stop Service一站式服务。道路监察局 Rely On Self Studying依靠自身学习