Ukutshiza iNqaba yokuKhusela

Iiinkqubo zokutshiza ngokubanzi zisebenza kwinqaba yokutshiza yokutshiza.Kule nkqubo ulwelo lutshizwa ngethontsi elincinci kwindawo evalekileyo yecylindrical. Ukudibana nokuhamba komoya oshushu, amanzi aphuphuma kwimveliso yokuqala abe ngumgubo wokutya. Umxube uyahluzwa ukugcina umgubo kwaye ukhulule umoya.