据新华社消息 俄罗斯飞行控制中心26日发布消息说，该中心当天成功将国际空间站轨道的平均高度提升至约390公里。为保证同俄"联盟"载人飞船和"进步"货运飞船的顺利对接，俄方已于本月19日实施过一次空间站轨道的提升 ... 国际空间站两提轨道高度
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