Njira Zabwino Kwambiri Zochotsera Mafuta Oyimirira
Mu malo opangira ndi opangira makina, utsi wa mafuta ukhoza kuyambitsa mavuto akulu, kuyambira kuopsa kwa thanzi mpaka kuwonongeka kwa zida. Dongosolo lopangidwa bwino lochotsera utsi wa mafuta ndi lofunikira kuti mpweya ukhale woyera, kuteteza thanzi la ogwira ntchito, komanso kusunga makina....
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