 |
| |||
| basal level; main level; sill floor; sill level; main floor; sollar level; reference plane | |||
| floor level; sill; winding level | |||
| master horizon | |||
| sole | |||
| основной горизонт: 27 phrases in 10 subjects |
| Construction | 1 |
| Geology | 8 |
| Gold mining | 1 |
| Makarov | 3 |
| Mining | 7 |
| Oceanography & oceanology | 1 |
| Oil / petroleum | 2 |
| Oil and gas | 1 |
| Oilfields | 1 |
| Technology | 2 |