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| zasada efektywności | |||
| wydajność f; sprawność f | |||
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| efektywność f | |||
| eficiência: 99 phrases in 22 subjects |
| Accumulators | 2 |
| Antennas and waveguides | 5 |
| Automatic control | 1 |
| Brazil | 3 |
| Chemistry | 4 |
| Economy | 1 |
| Electric motors | 4 |
| Electrochemistry | 4 |
| Energy industry | 10 |
| Environment | 9 |
| Finances | 4 |
| General | 1 |
| Health care | 1 |
| Lighting other than cinema | 11 |
| Mathematics | 13 |
| Medical | 1 |
| Microsoft | 1 |
| Nuclear physics | 8 |
| Statistics | 3 |
| Thermal Energy | 3 |
| Transport | 4 |
| Vacuum tubes | 6 |