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| hatásfok; hatásosság | |||
| hatékonyság | |||
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| hatásfok; hatékonyság | |||
| eficienţă: 40 phrases in 14 subjects |
| Chemistry | 1 |
| Construction | 1 |
| Economy | 11 |
| Energy industry | 3 |
| Environment | 9 |
| European Union | 1 |
| Finances | 3 |
| Immigration and citizenship | 1 |
| Law | 2 |
| Mathematics | 2 |
| Microsoft | 3 |
| Mineral products | 1 |
| Obsolete / dated | 1 |
| Transport | 1 |