 |
| |||
| буровой горизонт (при подземном бурении) | |||
| drilling level: 7 phrases in 4 subjects |
| Oil / petroleum | 2 |
| Oil and gas | 1 |
| Oil and gas technology | 1 |
| Oilfields | 3 |
|
| |||
| буровой горизонт (при подземном бурении) | |||
| drilling level: 7 phrases in 4 subjects |
| Oil / petroleum | 2 |
| Oil and gas | 1 |
| Oil and gas technology | 1 |
| Oilfields | 3 |