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| contacto para os relés elementares | |||
| تلامس: 52 phrases in 9 subjects |
| Antennas and waveguides | 2 |
| Electric machinery | 2 |
| Electric traction | 12 |
| Electrical engineering | 7 |
| Isolation | 1 |
| Lighting other than cinema | 1 |
| Magnetics | 1 |
| Power system protection | 25 |
| Telecommunications | 1 |