Chances of failure and disaster are ever present in all space navigation.
所有的宇宙航行都始终存在着失败和发生灾难的可能性。
Company to design production, sales, UMT, the control system. Space Navigation .
公司以设计生产，销售城市轨道交通，地铁控制系统。
Navigation is the ability to rapidly move around the information space to locate related information.
导航是指在信息空间中快速四处移动以定位相关信息的能力。
This paper studied the observability analysis of deep space autonomous navigation.
研究了深空自主导航系统的可观性分析。
This paper studied the observability analysis of deep space autonomous navigation.
研究了深空自主导航系统的可观性分析。
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