 |
| |||
| helicopter system | |||
| вертолётная система: 73 phrases in 10 subjects |
| Astronautics | 1 |
| Aviation | 3 |
| Drilling | 1 |
| Firefighting and fire-control systems | 1 |
| General | 1 |
| Military | 52 |
| Nautical | 1 |
| Oil / petroleum | 1 |
| Technology | 11 |
| United States | 1 |
|
| |||
| helicopter system | |||
| вертолётная система: 73 phrases in 10 subjects |
| Astronautics | 1 |
| Aviation | 3 |
| Drilling | 1 |
| Firefighting and fire-control systems | 1 |
| General | 1 |
| Military | 52 |
| Nautical | 1 |
| Oil / petroleum | 1 |
| Technology | 11 |
| United States | 1 |