| |||
| пробная струна | |||
| испытательная колонна | |||
|
testing string : 3 phrases in 3 subjects |
| Oil / petroleum | 1 |
| Oil and gas | 1 |
| Oilfields | 1 |
| |||
| пробная струна | |||
| испытательная колонна | |||
|
testing string : 3 phrases in 3 subjects |
| Oil / petroleum | 1 |
| Oil and gas | 1 |
| Oilfields | 1 |