 |
| pressure drop: 200 phrase in 40 subjects |
| Abbreviation | 1 |
| Astronautics | 12 |
| Automated equipment | 3 |
| Automobiles | 3 |
| Aviation | 5 |
| Caspian | 1 |
| Chemistry | 3 |
| Combustion gas turbines | 1 |
| Construction | 5 |
| Drilling | 2 |
| Electronics | 12 |
| Energy industry | 9 |
| Forestry | 1 |
| Gas processing plants | 1 |
| General | 1 |
| Geology | 2 |
| Makarov | 2 |
| Mathematics | 3 |
| Mechanic engineering | 2 |
| Medical | 2 |
| Metallurgy | 2 |
| Meteorology | 2 |
| Military | 1 |
| Mining | 4 |
| Natural resourses and wildlife conservation | 4 |
| Nuclear and fusion power | 2 |
| Oil / petroleum | 14 |
| Oil and gas | 7 |
| Oil and gas technology | 5 |
| Oilfields | 12 |
| Rail transport | 3 |
| Refrigeration | 24 |
| Sakhalin | 2 |
| Sakhalin S | 2 |
| Seismology | 1 |
| Shipbuilding | 3 |
| Technology | 29 |
| Tengiz | 1 |
| Thermal engineering | 5 |
| Transport | 6 |