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| ثنائي | |||
| ازدواج القوة ؛ازدواج ؛عزم محورى | |||
| binário: 90 phrases in 14 subjects |
| Automatic control | 7 |
| Electric motors | 30 |
| Electric traction | 6 |
| Electronics | 5 |
| Lighting other than cinema | 2 |
| Mathematics | 8 |
| Metrology | 1 |
| Microsoft | 8 |
| Physics | 3 |
| Power lines | 8 |
| Power system protection | 2 |
| Radio | 1 |
| Statistics | 5 |
| Telegraphy | 4 |