 |
| |||
| line pulsing; line signaling; line signalling (oleg.vigodsky) | |||
| линейная сигнализация: 8 phrases in 3 subjects |
| Communications | 1 |
| Firefighting and fire-control systems | 1 |
| Telecommunications | 6 |
|
| |||
| line pulsing; line signaling; line signalling (oleg.vigodsky) | |||
| линейная сигнализация: 8 phrases in 3 subjects |
| Communications | 1 |
| Firefighting and fire-control systems | 1 |
| Telecommunications | 6 |