Ibisobanuro byamagambo yumutwe?
Yashyizwe kumpande zumutwe wimodoka kugirango itara umuhanda utwara nijoro. Hariho amatara abiri na sisitemu enye. Kubera ko itara ryamatara rigira ingaruka zitaziguye ku mikorere n’umutekano wo mu muhanda wo gutwara nijoro, ishami rishinzwe imicungire y’umuhanda ku isi hose riteganya ibipimo by’amatara mu buryo bw’amategeko.
