Zvekugadzirwa kwenzvimbo isingagadzike ngura mudunhu renzvimbo inosangana neyakaipisa gasi yekupisa bhaira yesimbi yakakandwa, zvikamu zvinoenderana zvechikamu chekukanda zvinorapwa neyakagezwa dema ine chinhu chekukwirisa, kunyanya 40- 50% ferrosilicon, iyo inoshandura ...
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