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deep-well : 113 phrases in 29 subjects |
| Automobiles | 1 |
| Construction | 10 |
| Drilling | 3 |
| Ecology | 4 |
| Electrical engineering | 1 |
| Electronics | 6 |
| Energy industry | 2 |
| Firefighting and fire-control systems | 1 |
| Forestry | 2 |
| General | 8 |
| Geology | 4 |
| Geophysics | 2 |
| Immunology | 1 |
| Makarov | 5 |
| Military | 1 |
| Mining | 1 |
| Nautical | 2 |
| Nuclear and fusion power | 2 |
| Oil / petroleum | 14 |
| Oil and gas | 9 |
| Oil and gas technology | 4 |
| Oilfields | 5 |
| Plastics | 1 |
| Proverb | 3 |
| Sakhalin | 2 |
| Solar power | 1 |
| Technology | 14 |
| Transport | 2 |
| Water resources | 2 |