Replacement Data Storage System替代数据存储系统 Research and Development Support System研究和发展的支持系统 Regional Development Simulation System区域发展的仿真系统 Radio Determination Satellite Service无线电测定卫星业务 Racing Decision Support System (horse racing analysis and betting software)赛车的决策支持系统(赛马分析及投注软件) Replacement Data Storage Subsystem替代数据存储子系统 Running Digital Sum Sum (sum of running digital sums)数字之和(金额之和奔跑的数字总结) Radio Determination and Satellite System收音机的决心和卫星系统 Rapid Deployable/Deployment Surveillance System快速部署/部署监控系统