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источники энергии и эффективное использование энергоресурсов |
energy and energy efficiency: 19 phrases in 10 subjects |
Ecology | 2 |
Education | 1 |
Energy industry | 8 |
Energy system | 1 |
European Union | 1 |
General | 1 |
Geophysics | 1 |
Rail transport | 1 |
United Nations | 2 |
United States | 1 |