 |
| |||
| stuffing box type blowout preventer | |||
| превентор сальникового типа: 4 phrases in 2 subjects |
| Oil / petroleum | 3 |
| Oil and gas technology | 1 |
|
| |||
| stuffing box type blowout preventer | |||
| превентор сальникового типа: 4 phrases in 2 subjects |
| Oil / petroleum | 3 |
| Oil and gas technology | 1 |