| |||
| ارسال إشارات في الإتصالات عن بعد ؛إرسال إشارات في الاتصالات | |||
|
Signalling : 78 phrases in 7 subjects |
| Electricity generation | 2 |
| Electronics | 2 |
| Power lines | 1 |
| Rail transport | 15 |
| Telecommunications | 49 |
| Telegraphy | 5 |
| Telephony | 4 |
| |||
| ارسال إشارات في الإتصالات عن بعد ؛إرسال إشارات في الاتصالات | |||
|
Signalling : 78 phrases in 7 subjects |
| Electricity generation | 2 |
| Electronics | 2 |
| Power lines | 1 |
| Rail transport | 15 |
| Telecommunications | 49 |
| Telegraphy | 5 |
| Telephony | 4 |