I-corundum emhlophe erhabaxa, ekwabizwa ngokuba yi-white aluminium oxide, izinzile kakuhle kubushushu, iyakwazi ukumelana nobushushu obuphezulu ngaphezu kwama-1750 degrees, icocekile kakhulu, iyazilola kakuhle, inamandla okusila, ixabiso eliphantsi leekhalori, ukusebenza kakuhle kunye nokumelana nokugqwala kwe-asidi. Ibonakalise ukuba ikwiintlobo ezininzi...
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