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hélice : 232 phrases in 17 subjects |
| Agriculture | 26 |
| Astronautics | 6 |
| Chemistry | 1 |
| Communications | 4 |
| Earth sciences | 9 |
| Electronics | 6 |
| Energy industry | 7 |
| General | 4 |
| Health care | 1 |
| Industry | 7 |
| Information technology | 1 |
| Mechanic engineering | 48 |
| Medical | 5 |
| Metallurgy | 1 |
| Natural sciences | 3 |
| Technology | 2 |
| Transport | 101 |
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