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landing system | |||
landing system (返回式航天器的) |
着陆系统 : 272 phrases in 11 subjects |
Air defense | 8 |
Aviation | 139 |
Earth sciences | 3 |
Electronics | 43 |
General | 6 |
Information technology | 1 |
Navigation | 2 |
Skydiving | 2 |
Space | 59 |
Technology | 8 |
United States | 1 |