 |
| |||
| approach signal | |||
| сигнал приближения: 15 phrases in 11 subjects |
| Astronautics | 2 |
| Automated equipment | 1 |
| Aviation | 2 |
| Computers | 1 |
| Energy industry | 1 |
| Nautical | 1 |
| Navigation | 1 |
| Physics | 2 |
| Rail transport | 2 |
| Shipbuilding | 1 |
| Transport | 1 |
|
| |||
| approach signal | |||
| сигнал приближения: 15 phrases in 11 subjects |
| Astronautics | 2 |
| Automated equipment | 1 |
| Aviation | 2 |
| Computers | 1 |
| Energy industry | 1 |
| Nautical | 1 |
| Navigation | 1 |
| Physics | 2 |
| Rail transport | 2 |
| Shipbuilding | 1 |
| Transport | 1 |