Ibipimo fatizo byurupapuro rwicyuma

Amabati ashyushye ashyushye cyane ibirundo bifite imiterere itatu:Amabati y'icyuma U, Urupapuro rwicyuma cya Z.Urupapuro rw'icyuma. Reba Ishusho 1 kugirango ubone ibisobanuro birambuye. Muri byo, ibirundo by'icyuma cya Z-shusho hamwe n'ibirundo by'ibyuma byerekana umurongo bihenze cyane kubera umusaruro utoroshye, gutunganya no gushyiraho. Ni hejuru ya 1/3 kurenza U-shusho yicyuma. Ubu ikoreshwa cyane cyane mu Burayi no muri Amerika. Ibirundo by'ibyuma U bikoreshwa cyane muri Aziya, harimo n'Ubushinwa.