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| twin lead; twin line | |||
| línea doble: 25 phrases in 11 subjects |
| Agriculture | 2 |
| Computers | 1 |
| Electric traction | 1 |
| Electronics | 5 |
| Information technology | 6 |
| Mathematics | 1 |
| Mechanic engineering | 1 |
| Power lines | 1 |
| Scientific | 2 |
| Technology | 1 |
| Transport | 4 |
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