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Njira Yosinthira Mafuta Ogwiritsidwa Ntchito
Mafuta ogwiritsidwa ntchito, omwe amatchedwanso mafuta odzola, ndi makina osiyanasiyana, magalimoto, zombo zoti zilowe m'malo mwa mafuta odzola, munjira yogwiritsidwa ntchito ndi kuipitsidwa kwakunja kuti apange chingamu chochuluka, okusayidi motero kutaya mphamvu. Zifukwa zazikulu: Choyamba, mafuta omwe akugwiritsidwa ntchito amasakanizidwa ndi chinyezi, fumbi, mafuta ena osiyanasiyana ndi ufa wachitsulo wopangidwa ndi makina owonongeka, zomwe zimapangitsa kuti mtundu wakuda ndi kukhuthala kwakukulu. Chachiwiri, mafutawo amawonongeka pakapita nthawi, ndikupanga ma organic acid, colloid ndi zinthu zofanana ndi phula.
