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W/R ndiye chidule cha zoletsa madzi.W/P ndi chidule cha mawu osalowa madzi.Madzi otsekemera nthawi zambiri amawonjezeredwa ndi wothandizira madzi pamene nsaluyo imapangidwa.Pambuyo pouma nsalu, filimu ya hydrophobic idzapangidwa pamwamba pa nsalu.Mwanjira iyi, madontho amadzi sadzakhala ...Werengani zambiri»
