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| deep layer (ABelonogov) | |||
| low level | |||
| deep | |||
| deep level; deep horizon | |||
| deep level (воды) | |||
| глубокий горизонт: 27 phrases in 12 subjects |
| Ecology | 5 |
| General | 1 |
| Geology | 3 |
| Geophysics | 5 |
| Makarov | 1 |
| Mining | 2 |
| New Zealand | 1 |
| Oil / petroleum | 3 |
| Oil and gas | 2 |
| Oil and gas technology | 1 |
| Sakhalin | 2 |
| Technology | 1 |