Translations:Versickerung und Retention/147/en

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r(D,30) = 273 l/sha r(D,2) = 148 l/sha Vrück = 273 x 5,695 – (148 x 1,250 x 0.8 + 148 x 4,445 x 0.9) x 10 x 60 / (10,000 x 1000) = 48.9 m³