Molao-motheo oa khetho ea lisebelisoa Ho na le mefuta e mengata ea lisebelisoa tsa ho fafatsa tse se nang moea, tse tla khethoa ho latela lintlha tse tharo tse latelang.(1) Khetho ho ea ka litšobotsi tsa ho roala: pele ho tsohle, nahana ka viscosity ea ho roala, 'me u khethe lisebelisoa tse nang le khatello e phahameng ea khatello ...
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