NASA向波音和SpaceX各增订4次载人飞行任务

Publisher: 国家哲学社会科学学术期刊数据库

E-ISSN: 1004-7980|volume|1|47-47

ISSN: 1004-7980

Source: 航天工业管理, Vol.volume, Iss.1, 2017-01, pp. : 47-47

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Abstract