Izithuthuthu zizinto zobunjineli ezimangalisayo, kwaye yonke into idlala indima ebalulekileyo ekusebenzeni kwazo.Phakathi kwezi zixhobo, inkqubo yokugqibela yokuqhuba iyona nto ibalulekileyo, imisela indlela amandla avela kwi-injini athunyelwa ngayo kwivili elingasemva.Omnye wabadlali abaphambili kule nkqubo sisixhobo se-bevel, i...
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