文件名称:design
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轨道设计，确定着陆准备轨道近月点和远月点的位置，以及嫦娥三号相应速度的大小与方向。-Track design, determine the location of the landing point in recent months to prepare the track and Apolune, as well as the size and direction of the Chang-e III corresponding velocity.
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design.txt