 |
| |||
| ball-and-roller bit bearing | |||
| шарико-роликовая опора долота: 6 phrases in 4 subjects |
| Oil / petroleum | 2 |
| Oil and gas | 1 |
| Oil and gas technology | 1 |
| Oilfields | 2 |
|
| |||
| ball-and-roller bit bearing | |||
| шарико-роликовая опора долота: 6 phrases in 4 subjects |
| Oil / petroleum | 2 |
| Oil and gas | 1 |
| Oil and gas technology | 1 |
| Oilfields | 2 |