2020年国外载人航天发展综述

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2020年,尽管受疫情影响,但国外主要国家依然持续推进载人航天活动。综述了2020年国外载人航天活动概况,总结了载人航天各系统的发展动态,对其政策、规划、未来发展趋势进行了分析。
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