constant d'equilibri en pressionshttps://www.upc.edu/slt/ca/imatges/formules-matematiques/constant-dequilibri-en-pressions/viewhttps://www.upc.edu/slt/ca/imatges/formules-matematiques/constant-dequilibri-en-pressions/@@download/image/constant_equilibri_pressions.gif
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