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Keywords from Image Description:
Gaine ventilation grain.svg fr Ventilation d'un tas de grain Rpartition des zones bien et moins bien ventiles en fonction de la disposition des gaines de ventilation Gaineventilationgrain Gaineventilationgrain Yelkrokoyade derivative work Frdric Michel Atelier graphique inkscape Vectorialisation Strogoff Gaineventilationgrain