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| rendimiento de energía | |||
| eficiencia energética; eficacia energética; rendimiento energético | |||
| eficiência energética: 29 phrases in 8 subjects |
| Energy industry | 15 |
| Environment | 6 |
| Finances | 1 |
| General | 2 |
| Lighting other than cinema | 1 |
| Nuclear physics | 1 |
| Statistics | 1 |
| Transport | 2 |