Makasitomala adagula makina owombera kuwomberawa makamaka kuti ayeretse chimango chagalimoto. Panthawi imodzimodziyo, chifukwa kasitomala ankagwiritsa ntchito kawirikawiri, adagula matani 15 azitsulo panthawi imodzi ndikutumiza pamodzi ndi makina owombera. Monga abrasive wa makina owombera kuwombera, kuwombera kwachitsulo ndi gawo lovala wamba. Makina owombera amtundu wa mbedza ali ndi chitsulo chowombera chitsulo, koma chifukwa kuwombera kwachitsulo kudzavala panthawi yowombera, kumafunika kuwonjezeredwa pafupipafupi.
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