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| English | German |
| abrupt border | scharfe Trennungslinie |
| abrupt contrast | scharfer Kontrast |
| abrupt contrast | harter Kontrast |
| abrupt deterioration of the image quality | plötzliche Verschlechterung der Bildgüte |
| abrupt division | Steilkante (filter: between the regions of high and low transmission) |
| abrupt division | Sprungstelle (filter: between the regions of high and low transmission) |
| abrupt rise to maximum transmission | plötzlicher Übergang zu maximaler Durchlässigkeit (filter) |
| abrupt termination of the solar spectrum | plötzliches Ende des Sonnenspektrums |