IBIKURIKIRA: Gukora ibyuma birashobora kugabanywamo ibyuma bya karubone, ibyuma bito bito, ibyuma bito bito hamwe nicyuma kinini.Ibyuma bitandukanye bifite imiterere nuburyo bukoreshwa.Nka 5CrMnMo, 3Cr2W8V ibyuma bikoreshwa mugukora ibicuruzwa bishyushye bipfa;1Cr13, 2Cr13, 3Cr13, 4Cr13 ibyuma bikoreshwa mubuvuzi nabyo ...
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