Izikhonkwane zokumisa luhlobo olukhethekileyo lwezikhonkwane zokuqinisa, ngamanye amaxesha zibizwa ngokuba yi-screws yokutshixa.Izikrufu zokumisa ziyilelwe ukuthintela ukukhulula kwendalo okubangelwa kukungcangcazela okanye ezinye izinto.Ngokubanzi, izikrufu zokumisa ziyilwe ngeendlela ezahlukeneyo zokuphumeza iziphumo zokutshixa, kubandakanywa, kodwa kungaphelelanga apho: 1. ...
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