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| Filterfaktor m (the degree to which the filter affects the photographic exposure); Verlängerungsfaktor m (it is the degree to which the filter affects the photographic exposure) | |||
| Verlängerungsfaktor m | |||
| Filterfaktor m | |||
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filter factor : 2 phrases, 1 sujets |
| Cristaux piézoélectriques | 2 |