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| 直升飞机; 旋翼飞机 | |||
| 直升机 | |||
| 自转旋翼机 | |||
| 旋翼机; 旋翼飞行器 | |||
| 直升飞机 | |||
| English thesaurus | |||
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| A power-driven heavier-than-air aircraft supported in flight by the reactions of the air on one or more rotors | |||
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rotorcraft : 14 phrases in 3 subjects |
| Air defense | 1 |
| Aviation | 12 |
| Technology | 1 |
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