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| трубное соединение: 73 phrases in 22 subjects |
| Automated equipment | 4 |
| Automobiles | 1 |
| Caspian | 2 |
| Construction | 6 |
| Drilling | 1 |
| Energy industry | 1 |
| General | 4 |
| Mechanic engineering | 2 |
| Mechanics | 2 |
| Metallurgy | 1 |
| Mining | 2 |
| Oil / petroleum | 10 |
| Oil and gas | 7 |
| Oil and gas technology | 9 |
| Pipelines | 3 |
| Plastics | 1 |
| Plumbing | 1 |
| Sakhalin | 2 |
| Technology | 7 |
| Transport | 5 |
| Valves | 1 |
| Welding | 1 |