 |
| |||
| free fall (无制导，无推力，无减速装置) | |||
| free fall | |||
| |||
| free-fall | |||
| 自由下 落: 37 phrases in 10 subjects |
| Air defense | 1 |
| Aviation | 10 |
| Electronics | 3 |
| Metallurgy | 6 |
| Nautical | 1 |
| Outdoor activities and extreme sports | 1 |
| Plastics | 3 |
| Shipbuilding | 1 |
| Space | 3 |
| Technology | 8 |
|
| |||
| free fall (无制导，无推力，无减速装置) | |||
| free fall | |||
| |||
| free-fall | |||
| 自由下 落: 37 phrases in 10 subjects |
| Air defense | 1 |
| Aviation | 10 |
| Electronics | 3 |
| Metallurgy | 6 |
| Nautical | 1 |
| Outdoor activities and extreme sports | 1 |
| Plastics | 3 |
| Shipbuilding | 1 |
| Space | 3 |
| Technology | 8 |