Iimilo ezahlukahlukeneyo ezenziwe ngobhedu olucocekileyo okanye i-alloys yobhedu, kubandakanywa iintonga, iingcingo, iipleyiti, imicu, imicu, iityhubhu, iifoyile, njl., zibizwa ngokudibeneyo njengezinto zobhedu.Iindlela zokucubungula izinto zobhedu ziquka ukuqengqeleka, ukukhupha kunye nokudweba.Iindlela zokulungisa iipleyiti kunye nemicu ...
Funda ngokugqithisileyo