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| Lichtausbeute f | |||
| Effizienz f; Wirkungsgrad m | |||
| Wirtschaftlichkeit f | |||
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efficiency : 16 phrases in 11 subjects |
| Agriculture | 1 |
| Chemistry | 3 |
| Construction | 1 |
| Earth sciences | 2 |
| Economy | 2 |
| Electronics | 1 |
| Finances | 1 |
| General | 2 |
| Information technology | 1 |
| Natural sciences | 1 |
| Technology | 1 |
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