Unyolo wosapanga dzimbiri wodzigudubuza ndi zinthu zofunika kwambiri pazantchito zosiyanasiyana zamafakitale, zomwe zimapereka kufalitsa kodalirika komanso kothandiza kwa mphamvu ndi kuyenda. Maunyolowa amagwiritsidwa ntchito kwambiri m'mafakitale monga kukonza chakudya, mankhwala, kulongedza ndi kupanga, komwe ukhondo, corrosi ...
Werengani zambiri