 |
| |||
| shutoff ball (для посадки пакера) | |||
| check ball | |||
| запорный шарик: 5 phrases in 3 subjects |
| Armored vehicles | 1 |
| Oil and gas technology | 1 |
| Technology | 3 |
|
| |||
| shutoff ball (для посадки пакера) | |||
| check ball | |||
| запорный шарик: 5 phrases in 3 subjects |
| Armored vehicles | 1 |
| Oil and gas technology | 1 |
| Technology | 3 |