 |
| |||
| retractable bit (Yeldar Azanbayev) | |||
| съёмное долото: 13 phrases in 7 subjects |
| Drilling | 2 |
| Oil / petroleum | 5 |
| Oil and gas | 1 |
| Oil and gas technology | 1 |
| Oilfields | 1 |
| Production | 1 |
| Technology | 2 |
|
| |||
| retractable bit (Yeldar Azanbayev) | |||
| съёмное долото: 13 phrases in 7 subjects |
| Drilling | 2 |
| Oil / petroleum | 5 |
| Oil and gas | 1 |
| Oil and gas technology | 1 |
| Oilfields | 1 |
| Production | 1 |
| Technology | 2 |