Lens

Ma wheel wheel njanji ndiye chinsinsi chowonetsetsa kuti masitima akuyenda bwino. Pokwaniritsa kupanga ziro-chilema, opanga zida za njanji ayenera kuwongolera mosamalitsa gawo lililonse la njira yopangira, ndipo makina osindikizira-wokwanira pamapindikira kuchokera pamakina opangira ma wheelset ndi chizindikiro chofunikira cha mtundu wa ma wheelset assembly.Mapulogalamu akuluakulu a mndandanda wazinthuzi ali m'munda wowunikira ndikuwunika.