Dab tsi yog qhov sib txawv ntawm kev xyaum tsis siv roj thiab ib tus tsav tsheb tsis muaj tog tawm mus qaum?

Acordless laum / driveruses nruam tig kev quab yuam kom tsav lub hau ntswj mus rau qhov chaw. Ib qho cuam tshuam nrog siv lub zog sib hloov, tab sis nws' s txuas nrog burstsofquick forcein thedirectionofthe kev sib hloov, uas pab tsav lub hau ntswj.