 |
| potential drop: 16 phrases in 9 subjects |
| Drilling | 1 |
| Electrochemistry | 1 |
| Energy industry | 1 |
| Geophysics | 3 |
| Makarov | 1 |
| Metallurgy | 1 |
| Oil / petroleum | 1 |
| Oil and gas | 3 |
| Technology | 4 |
|
| potential drop: 16 phrases in 9 subjects |
| Drilling | 1 |
| Electrochemistry | 1 |
| Energy industry | 1 |
| Geophysics | 3 |
| Makarov | 1 |
| Metallurgy | 1 |
| Oil / petroleum | 1 |
| Oil and gas | 3 |
| Technology | 4 |