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| 公开/私有: | 公开 私有 |
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- airplanes (99)
- design and construction (27)
- space vehicles (20)
- aeronautics (18)
- materials (15)
- aerodynamics (12)
- rockets (aeronautics) (12)
- yearbooks (11)
- 民用飞机 (8)
- performance (7)
- aerospace engineering (6)
- airplanes, military (6)
- flight control (6)
- maintenance and repair (6)
- motors (6)
- piloting (6)
- 运输机 (6)
- airframes (5)
- composite materials (5)
- control systems (5)
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