India's own lunar orbiter descended to about 60 miles in 2008, he said, but was forced to return to a more stable, 125-mile-high orbit.
他透露2008年印度的月球卫星曾下降到60英里处，但又被迫回到了更为稳定的125英里高的轨道上。
A space station in high orbit might be a convenient way station for future cosmonauts intending to visit mars.
太空轨道中的空间站对于想去拜访火星的未来宇航员来说也许是一个方便的小站。
Although it is complicated in technology, space-based interception, which can intercept a target in any low, middle and high orbit, has more strategic value than ground-based interception.
天基拦截尽管技术复杂，但是可以拦截低、中、高轨道目标，比地基拦截更具有战略价值。
The theoretic analysis and simulation result showed that this control law had high orbit rendezvous precision with little calculation, which could realize fast and automatic orbit rendezvous.
理论分析和仿真结果表明，该控制律的交会精度较高、计算量小，可实现轨道交会控制的自主性和快速性。
The theoretic analysis and simulation result showed that this control law had high orbit rendezvous precision with little calculation, which could realize fast and automatic orbit rendezvous.
理论分析和仿真结果表明，该控制律的交会精度较高、计算量小，可实现轨道交会控制的自主性和快速性。
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