I-Defect enye: Ayikwazi ukuthulula Iimpawu: i-casting shape ayiphelelanga, imiphetho kunye neekona zijikelezileyo, eziqhelekileyo zibonwa kwiindawo ezincinci zodonga. Izizathu: 1. I-iron liquid ioksijini iyingozi, umxholo wekhabhoni kunye ne-silicon uphantsi, umxholo wesulfure uphezulu; 2. Ubushushu obuphantsi bokugalela, isantya esicothayo sokugalela...
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