 |
| |||
| operation and maintenance signal | |||
| |||
| orderwire signal | |||
|
signal d'exploitation : 5 do fraz, 3 tematyki |
| Elektronika | 1 |
| Komunikacja | 2 |
| Technologia informacyjna | 2 |
|
| |||
| operation and maintenance signal | |||
| |||
| orderwire signal | |||
|
signal d'exploitation : 5 do fraz, 3 tematyki |
| Elektronika | 1 |
| Komunikacja | 2 |
| Technologia informacyjna | 2 |