 |
| |||
| устройство открытия / закрытия | |||
| unheading device: 6 phrases in 3 subjects |
| Oil and gas | 4 |
| Oil and gas technology | 1 |
| Oil processing plants | 1 |
|
| |||
| устройство открытия / закрытия | |||
| unheading device: 6 phrases in 3 subjects |
| Oil and gas | 4 |
| Oil and gas technology | 1 |
| Oil processing plants | 1 |