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| Wirkungsgrad der Energie | |||
| Energieausnutzung f; Energieeffizienz f; energetischer Wirkungsgrad | |||
| eficiência energética: 32 phrases in 7 subjects |
| Energy industry | 20 |
| Environment | 5 |
| Finances | 1 |
| General | 2 |
| Lighting other than cinema | 1 |
| Nuclear physics | 1 |
| Transport | 2 |