 |
| concrete pipe: 46 phrases in 13 subjects |
| Building structures | 1 |
| Caspian | 1 |
| Construction | 17 |
| Electronics | 7 |
| Energy industry | 3 |
| Hydraulic engineering | 4 |
| Oil / petroleum | 1 |
| Oil and gas | 2 |
| Pipelines | 1 |
| Road works | 1 |
| Seismology | 1 |
| Technology | 6 |
| Water supply | 1 |
|
| concrete pipe: 46 phrases in 13 subjects |
| Building structures | 1 |
| Caspian | 1 |
| Construction | 17 |
| Electronics | 7 |
| Energy industry | 3 |
| Hydraulic engineering | 4 |
| Oil / petroleum | 1 |
| Oil and gas | 2 |
| Pipelines | 1 |
| Road works | 1 |
| Seismology | 1 |
| Technology | 6 |
| Water supply | 1 |