 |
| |||
| signal content | |||
| состав сигнала: 15 phrases in 3 subjects |
| Firefighting and fire-control systems | 4 |
| Mass media | 10 |
| Telecommunications | 1 |
|
| |||
| signal content | |||
| состав сигнала: 15 phrases in 3 subjects |
| Firefighting and fire-control systems | 4 |
| Mass media | 10 |
| Telecommunications | 1 |