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образные трубы : 61 phrases in 21 subjects |
| Aerohydrodynamics | 1 |
| Automobiles | 1 |
| Building materials | 1 |
| Caspian | 2 |
| Construction | 2 |
| Drilling | 3 |
| Electronics | 3 |
| Energy industry | 1 |
| General | 6 |
| Mechanic engineering | 8 |
| Metallurgy | 1 |
| Music | 2 |
| Nautical | 3 |
| Oil / petroleum | 4 |
| Oil and gas | 4 |
| Pipelines | 2 |
| Refrigeration | 2 |
| Sakhalin | 3 |
| Shipbuilding | 1 |
| Technology | 9 |
| Thermal engineering | 2 |