 |
| إشارة: 316 phrases in 21 subjects |
| Automatic control | 1 |
| Cables and cable production | 3 |
| Electrical engineering | 2 |
| Electronics | 42 |
| General | 1 |
| Lighting other than cinema | 9 |
| Magnetics | 2 |
| Mathematics | 1 |
| Microsoft | 16 |
| Power lines | 37 |
| Radio | 52 |
| Radiobiology | 2 |
| Rail transport | 46 |
| Satellite communications | 1 |
| Sound recording | 2 |
| Statistics | 1 |
| Telecommunications | 45 |
| Telegraphy | 47 |
| Telephony | 1 |
| Vacuum tubes | 1 |
| Video recording | 4 |