我国民营火箭公司“新空间航天”近日宣布,正式启动赤兔1号运载火箭回收与重复使用关键技术工程测试(赤兔1号运载火箭发动机舱直径2.25米,高4.5米),意味着新空间航天在“低成本、高可靠、可重复使用”航天技
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