Official Answer
Answer
Galling nuburyo bwo kwambara buterwa no gufatana hagati yinyerera, bikunze kugaragara mubyuma. Mugihe cyo kwishyiriraho, niba impeta ya spiral yaguwe hejuru yumutwe utarimo amavuta, umuvuduko mwinshi waho urashobora gutuma ubuso busudira hanyuma bugashwanyagurika. Ibipimo byubucamanza birimo ibyuma 'bisize' ku ndangamuntu yimpeta no guhuza inzira 'yatanyaguwe' kuri shaft. Ibi ntabwo byangiza igiti gusa ahubwo birashobora no 'gukora-gukomera' impeta mugace, bigatuma igabanuka kandi ikunda gucika. Kwirinda bikubiyemo gukoresha imiti igabanya ubukana cyangwa guhitamo impeta ifite amavuta yihariye yumye (nka PTFE cyangwa MoS2) itanga inzitizi hagati yicyuma cyombi mugihe cyo kuzunguruka.
