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switch : 102 phrases in 21 subjects |
| Antennas and waveguides | 4 |
| Economics | 4 |
| Electric machinery | 3 |
| Electric traction | 5 |
| Electrical engineering | 18 |
| Electricity generation | 6 |
| Finances | 2 |
| Genetics | 1 |
| International Monetary Fund | 1 |
| Isolation | 2 |
| Lighting other than cinema | 1 |
| Microsoft | 6 |
| Oil / petroleum | 3 |
| Oil and gas technology | 8 |
| Power electronics | 4 |
| Power system protection | 15 |
| Rail transport | 6 |
| Telecommunications | 3 |
| Telephony | 3 |
| Thermal Energy | 3 |
| Transformers | 4 |