... 转速控制范围,变速范围:range of speed control 转速降落率,相对转速降低,相对转速降落:relative speed drop 转速降低,停止旋转,反转,消自旋:despin ...
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But the satellites will arrive with less relative speed than spacecraft making the trip in three days, which means less fuel will be needed to brake and drop into lunar orbit.
但是相比太空飞船,卫星着陆时需要相对小的速度,这将需要三天的时间,意味着消耗更少的燃料进入绕月轨道。
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