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electric system : 301 phrase in 46 subjects |
| Architecture | 2 |
| Astronautics | 10 |
| Automated equipment | 8 |
| Automatic control | 8 |
| Automobiles | 5 |
| Aviation | 3 |
| Aviation medicine | 1 |
| Caspian | 1 |
| Construction | 19 |
| Education | 1 |
| Electrical engineering | 9 |
| Electricity | 2 |
| Electronics | 4 |
| Energy industry | 41 |
| Energy system | 25 |
| Firefighting and fire-control systems | 1 |
| General | 11 |
| Geophysics | 1 |
| Hydroelectric power stations | 1 |
| Information technology | 2 |
| Makarov | 3 |
| Mass media | 1 |
| Military | 19 |
| Mining | 3 |
| Nautical | 2 |
| Navy | 1 |
| Occupational health & safety | 1 |
| Oil / petroleum | 1 |
| Oil and gas | 2 |
| Oil processing plants | 1 |
| Physics | 1 |
| Politics | 1 |
| Production | 2 |
| Radioengineering | 1 |
| Rail transport | 11 |
| Refrigeration | 4 |
| Sakhalin | 6 |
| Silicate industry | 1 |
| Solar power | 2 |
| Soviet | 6 |
| Space | 9 |
| Technology | 58 |
| Telecommunications | 1 |
| Thermal engineering | 3 |
| Transport | 5 |
| Well control | 1 |