 |
| energy efficiency: 167 phrases in 47 subjects |
| Analytical chemistry | 1 |
| Astronautics | 1 |
| Audit | 1 |
| Aviation | 2 |
| Biology | 2 |
| Business | 2 |
| Business style | 4 |
| Chemistry | 1 |
| Construction | 4 |
| Ecology | 15 |
| Economy | 2 |
| Education | 1 |
| Electrical engineering | 2 |
| Electricity | 2 |
| Electrochemistry | 5 |
| Electronics | 4 |
| Energy industry | 40 |
| Energy system | 1 |
| European Bank for Reconstruction and Development | 2 |
| European Union | 1 |
| Food industry | 1 |
| Gas processing plants | 1 |
| General | 11 |
| Geophysics | 1 |
| Household appliances | 1 |
| Makarov | 5 |
| Mass media | 2 |
| Military | 4 |
| Nanotechnology | 4 |
| Nautical | 2 |
| Nuclear and fusion power | 1 |
| Nuclear physics | 1 |
| Oil processing plants | 5 |
| Politics | 3 |
| Production | 1 |
| Pumps | 1 |
| Quantum electronics | 1 |
| Rail transport | 1 |
| Refrigeration | 2 |
| Solar power | 3 |
| Technology | 9 |
| Thermal engineering | 1 |
| Trade unions | 4 |
| Transport | 1 |
| United Nations | 3 |
| United States | 1 |
| Радиоактивное излучение | 4 |