Umwijima wa okiside cyangwa umwirabura ni igikoresho cyo guhinduranya ibikoresho bya fer, ibyuma bidafite ingese, umuringa n'umuringa bishingiye ku mavuta, zinc, ibyuma by'ifu, hamwe n'uwagurisha ifeza. [1]Ikoreshwa mu kongeramo ruswa yoroheje, kugirango igaragare, no kugabanya urumuri.Kugirango ugere kuri ruswa nini cyane ...
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