E rarolla bothata ba hore moea o mongata o kopantsoe ka har'a thepa 'me ho thata ho o tlohela hamorao. E rarolla bothata ba hore lisebelisoa tse likhutlong tsa setshelo li thata ho hlohlelletsa, e leng se fellang ka ho tsosoa ho sa tšoaneng. E rarolla bothata ba hore ho na le phapang pakeng tsa viscosity pakeng tsa lisebelisoa 'me ho thata ho sisinyeha ka botlalo. E rarolla bothata boo ho leng thata ho kopanya lisebelisoa tse ngata tsa phofo ka thepa e phahameng ea viscosity. E rarolla bothata ba ho kopanya ho sa tšoaneng le pula ea hore ho na le phapang pakeng tsa matla a khoheli a khethehileng pakeng tsa thepa.