 |
| double pipe: 105 phrases in 22 subjects |
| Architecture | 3 |
| Chemistry | 3 |
| Construction | 8 |
| Drilling | 11 |
| Electronics | 3 |
| Energy industry | 7 |
| Gold mining | 1 |
| Makarov | 2 |
| Meat processing | 1 |
| Metallurgy | 1 |
| Military | 1 |
| Natural resourses and wildlife conservation | 2 |
| Nautical | 3 |
| Oil / petroleum | 16 |
| Oil and gas | 5 |
| Oil and gas technology | 3 |
| Pipelines | 4 |
| Refrigeration | 5 |
| Technology | 12 |
| Thermal engineering | 9 |
| Transport | 4 |
| Welding | 1 |