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中心线 : 232 phrases in 22 subjects |
| Astronautics | 1 |
| Aviation | 4 |
| Cables and cable production | 3 |
| Chemistry | 2 |
| Construction | 6 |
| Drilling | 1 |
| Education | 1 |
| Electronics | 9 |
| Forestry | 1 |
| General | 101 |
| Mathematics | 3 |
| Mechanic engineering | 1 |
| Metallurgy | 5 |
| Military | 3 |
| Nautical | 6 |
| Pipelines | 1 |
| Polygraphy | 1 |
| Rail transport | 2 |
| Roll stock | 1 |
| Sakhalin | 1 |
| Stamping | 1 |
| Technology | 78 |
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