percolation : 203 phrases in 38 subjects |
Agriculture | 4 |
Cement | 2 |
Chemistry | 2 |
Construction | 15 |
Ecology | 11 |
Electrochemistry | 1 |
Electronics | 7 |
Food industry | 2 |
Forestry | 2 |
Gas processing plants | 1 |
General | 1 |
Geography | 2 |
Geology | 3 |
Gold mining | 1 |
Hydraulic engineering | 1 |
Hydraulics | 2 |
Hydrography | 1 |
Hydrology | 2 |
Immunology | 1 |
Makarov | 40 |
Mass media | 4 |
Mathematics | 5 |
Meteorology | 1 |
Military | 2 |
Mining | 7 |
Nanotechnology | 4 |
Natural resourses and wildlife conservation | 7 |
Navigation | 1 |
Oil / petroleum | 8 |
Oil and gas | 2 |
Oil and gas technology | 2 |
Oilfields | 1 |
Physics | 10 |
Refrigeration | 1 |
Semiconductors | 1 |
Technology | 31 |
Water resources | 14 |
Water supply | 1 |