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eixo : 47 phrases in 10 subjects |
| Antennas and waveguides | 3 |
| Brazil | 3 |
| Economy | 3 |
| Electric traction | 8 |
| General | 3 |
| Mechanic engineering | 4 |
| Microsoft | 3 |
| Natural sciences | 1 |
| Satellite communications | 7 |
| Transport | 12 |
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