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Found in phrases
| ظاهرة: 29 phrases in 11 subjects |
| Accumulators | 1 |
| Antennas and waveguides | 5 |
| Electric traction | 2 |
| Electricity generation | 1 |
| Electronics | 1 |
| Environment | 3 |
| Lighting other than cinema | 5 |
| Semiconductors | 2 |
| Sound recording | 1 |
| Thermal Energy | 2 |
| Vacuum tubes | 6 |