 |
| |||
| friction bearing bit | |||
| долото с опорой скольжения: 10 phrases in 4 subjects |
| Drilling | 4 |
| Oil and gas | 4 |
| Oil and gas technology | 1 |
| Oilfields | 1 |
|
| |||
| friction bearing bit | |||
| долото с опорой скольжения: 10 phrases in 4 subjects |
| Drilling | 4 |
| Oil and gas | 4 |
| Oil and gas technology | 1 |
| Oilfields | 1 |