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- energy audit 4
- energy balance 2
- energy branch 1
- energy characteristics of radio channels 1
- energy conservation 2
- energy conservation in usages 1
- energy conservation in usages 1
- energy consumption 8
- energy efficiency 16
- energy efficiency measures 1
- energy efficiency mode 1
- energy efficiency of locomotives 1
- energy efficient technologies 1
- energy expenses 1
- energy installation 1
- energy installing the diesel locomotive z diesel D49 1
- energy intensity 1
- energy intensive 1
- energy losses 1
- energy market 1