| |||
operating well (подземного газогенератора) | |||
child well (grafleonov) | |||
development well; treatment well (google.com wandervoegel) |
рабочая скважина: 17 phrases in 6 subjects |
Business | 2 |
Mining | 4 |
Oil / petroleum | 2 |
Oil and gas | 4 |
Road works | 4 |
Seismology | 1 |