| |||
| يضاعف الاشارات | |||
|
multiplex : 15 phrases in 4 subjects |
| Power lines | 5 |
| Telecommunications | 1 |
| Telegraphy | 8 |
| Wood processing | 1 |
| |||
| يضاعف الاشارات | |||
|
multiplex : 15 phrases in 4 subjects |
| Power lines | 5 |
| Telecommunications | 1 |
| Telegraphy | 8 |
| Wood processing | 1 |