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| фактическая плотность | |||
| actual density: 10 phrases in 7 subjects |
| Energy industry | 1 |
| Firefighting and fire-control systems | 1 |
| Metallurgy | 1 |
| Metrology | 1 |
| Oil / petroleum | 1 |
| Rail transport | 1 |
| Technology | 4 |
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