Ke Hobane'ng ha re Hloka Sesefo se Molemo sa Oli ea Boleng Hobane ts'ebetsong ea ts'ebetso ea enjene, lithōle tsa tšepe, lerōle, li-deposit tsa carbon le li-colloidal deposits tse nang le mocheso o phahameng oa mocheso, metsi, joalo-joalo li lula li kopantsoe ka har'a oli ea lubricating ...
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