| |||
| вооружение долота | |||
|
bit cutting structure : 6 phrases in 4 subjects |
| Drilling | 1 |
| Oil / petroleum | 3 |
| Oil and gas technology | 1 |
| Oilfields | 1 |
| |||
| вооружение долота | |||
|
bit cutting structure : 6 phrases in 4 subjects |
| Drilling | 1 |
| Oil / petroleum | 3 |
| Oil and gas technology | 1 |
| Oilfields | 1 |