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Found in phrases
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: 13 phrases in 9 subjects |
| Electric traction | 2 |
| Electronics | 2 |
| General | 2 |
| Mathematics | 1 |
| Physics | 1 |
| Rail transport | 1 |
| Superconductivity | 2 |
| Thermal Energy | 1 |
| Vacuum tubes | 1 |