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| zasada efektywności | |||
| wydajność f; sprawność f; efektywność f | |||
| skuteczność f | |||
| efficienza: 89 phrases in 23 subjects |
| Accumulators | 2 |
| Antennas and waveguides | 9 |
| Automatic control | 1 |
| Banking | 1 |
| Chemistry | 1 |
| Ecology | 1 |
| Economy | 4 |
| Energy industry | 15 |
| Environment | 12 |
| Finances | 5 |
| General | 3 |
| Law | 1 |
| Lighting other than cinema | 2 |
| Mathematics | 13 |
| Medical | 1 |
| Microsoft | 1 |
| Nuclear physics | 2 |
| Sound recording | 5 |
| Statistics | 3 |
| Telegraphy | 1 |
| Thermal Energy | 2 |
| Transport | 2 |
| Vacuum tubes | 2 |