 |
| derivação: 156 phrases in 23 subjects |
| Antennas and waveguides | 1 |
| Brazil | 4 |
| Cables and cable production | 13 |
| Communications | 16 |
| Construction | 12 |
| Earth sciences | 10 |
| Electric motors | 3 |
| Electric traction | 4 |
| Electrical engineering | 2 |
| Electricity generation | 4 |
| Electronics | 33 |
| Energy industry | 3 |
| General | 3 |
| Information technology | 12 |
| Mechanic engineering | 12 |
| Medical | 2 |
| Patents | 1 |
| Power lines | 2 |
| Radio | 1 |
| Statistics | 1 |
| Technology | 2 |
| Transformers | 1 |
| Transport | 14 |