Imyenda igenda kumurongo ugororotse kumurongo ugororotse ni iy'imyitozo isanzwe.Imirongo ifatika ikoreshwa kugirango hamenyekane icyerekezo kigendagenda cyumuzingi wizunguruka nibindi bice, kugirango ushyigikire cyangwa uyobore ibice.Umurongo ufite umurongo wingenzi ni ugushyigikira imashini izunguruka kugirango igabanye coefficient de fraisation yimitwaro ya mashini mugikorwa cyo kohereza ibikoresho.