|
core barrel : 164 phrases in 15 subjects |
| Bridge construction | 1 |
| Drilling | 15 |
| Electronics | 13 |
| Energy industry | 7 |
| General | 3 |
| Geology | 1 |
| Hydrology | 1 |
| Mechanic engineering | 3 |
| Mining | 20 |
| Nuclear and fusion power | 9 |
| Oil / petroleum | 54 |
| Oil and gas | 11 |
| Oil and gas technology | 7 |
| Oilfields | 6 |
| Technology | 13 |