... 月球旅行飞行器 lunar excursion craft 月球软着陆 soft lunar landing 月球收集实验室 lunar receiving laboratory ...
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Soft Lunar Landing And Return 月球上软着陆和返回
soft lunar landing dynamics 软着陆动力学
Lunar soft landing 月球软着陆
Lunar soft-landing mission 软着月任务
lunar soft-landing spacecraft 月球软着陆航天器
Firstly, based on simplified dynamics of lunar soft landing, an explicit guidance law was induced by solving the special two-point boundary value problem.
首先，基于简化的软着陆动力学模型，通过求解特殊两点边值问题，给出了一种实时显式制导方法。
On Jan. 9, 1968, the Surveyor 7 space probe made a soft landing on the moon, marking the end of the American series of unmanned explorations of the lunar surface.
1968年1月9日，测量员7号空间探测器在月球表面软着陆，标志着美国对月球表面的无人探测系列任务的结束。
Based on minimal fuel principle, the switching curve of ignition is confirmed by using optimization theory, and a braking scheme is designed for the process of the lunar probe vertical soft landing.
针对月球探测器垂直软着陆过程，基于耗燃最优的原则，利用最优化理论确定了点火切换曲线。设计出一种制动方案。
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