Qeb khoom
Cov Khoom Nrov
Nrhiav
Drive Shaft yog ib qho khoom siv hluav taws xob siv los xa hluav taws xob thiab lub zog, feem ntau yog siv los txuas ob yam sib hloov, xws li lub cav thiab lub log tsav ntawm lub tsheb.
