 |
| |||
| hardened (о защитных сооружениях) | |||
| заглублённого типа: 10 phrases in 4 subjects |
| Airports and air traffic control | 2 |
| Astronautics | 5 |
| Military | 2 |
| Oil and gas technology | 1 |
|
| |||
| hardened (о защитных сооружениях) | |||
| заглублённого типа: 10 phrases in 4 subjects |
| Airports and air traffic control | 2 |
| Astronautics | 5 |
| Military | 2 |
| Oil and gas technology | 1 |