 |
| |||
| double concentric | |||
| двойной концентрический: 9 phrases in 6 subjects |
| Chemistry | 2 |
| Drilling | 1 |
| Electrical engineering | 1 |
| Oil / petroleum | 3 |
| Oil and gas technology | 1 |
| Technology | 1 |
|
| |||
| double concentric | |||
| двойной концентрический: 9 phrases in 6 subjects |
| Chemistry | 2 |
| Drilling | 1 |
| Electrical engineering | 1 |
| Oil / petroleum | 3 |
| Oil and gas technology | 1 |
| Technology | 1 |