Isethulo somkhiqizo:
Insimbi eyindilinga iyinsimbi eqinile eyi-cylindrical, ububanzi bayo bungaklanywa ngamasayizi ahlukene ngokuya ngezidingo zokukhiqiza.Inqubo yokucubungula ihlanganisa ukugoqa okushisayo, ukudweba okubandayo, ukubumba nokwelashwa kokushisa nezinye izindlela.Phakathi kwazo, ukugoqa okushisayo kuyindlela evame ukusetshenziswa kakhulu, engakhiqiza insimbi eyindilinga enobubanzi obukhulu.Inqubo yokudweba ebandayo ingaveza ububanzi obuncane kanye nokunemba okuphezulu kwensimbi eyindilinga.