Njira yothetsera chimbudzi imagawidwa m'magawo atatu: Chithandizo choyambirira: chithandizo chakuthupi, kudzera mu chithandizo cha makina, monga grille, sedimentation kapena air flotation, kuchotsa miyala, mchenga ndi miyala, mafuta, mafuta, etc.Chithandizo chachiwiri: mankhwala a biochemical, po ...
Werengani zambiri