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对 流 : 601 phrase in 50 subjects |
| Aerohydrodynamics | 2 |
| Agrochemistry | 1 |
| Antennas and waveguides | 6 |
| Architecture | 1 |
| Astronautics | 1 |
| Astronomy | 2 |
| Automated equipment | 1 |
| Aviation | 5 |
| Business | 7 |
| Chemistry | 6 |
| Climatology | 1 |
| Construction | 5 |
| Ecology | 6 |
| Education | 1 |
| Electronics | 60 |
| Energy industry | 2 |
| Environment | 2 |
| Firefighting and fire-control systems | 2 |
| Forestry | 1 |
| General | 176 |
| Geology | 3 |
| Geophysics | 1 |
| Household appliances | 1 |
| Hydraulics | 2 |
| Hydrography | 1 |
| Hydrology | 2 |
| Law | 1 |
| Mathematics | 1 |
| Medical | 2 |
| Metallurgy | 3 |
| Meteorology | 4 |
| Metrology | 2 |
| Military | 3 |
| Mining | 2 |
| Name of organization | 2 |
| Nautical | 1 |
| Nuclear and fusion power | 3 |
| Oceanography & oceanology | 1 |
| Oil / petroleum | 3 |
| Oil and gas | 9 |
| Oil processing plants | 15 |
| Physics | 3 |
| Politics | 2 |
| Radio | 3 |
| Rail transport | 1 |
| Refrigeration | 2 |
| Technology | 237 |
| Telecommunications | 1 |
| United States | 1 |
| Wood processing | 1 |
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