Itanura rya Hoffman ryo kurasa no kumisha amatafari y'ibumba

Itanura rya Hoffmann ryerekeza ku itanura rihoraho rifite imiterere ya tunnel ya buri mwaka, igabanijwemo ubushyuhe, guhuza, gukonjesha uburebure bwa tunnel.Iyo urasa, umubiri wicyatsi ushyizwe mugice kimwe, ukurikirane kongeramo lisansi ahantu hatandukanye h'umurongo, kugirango urumuri rukomeze rutere imbere, kandi umubiri unyuze mubice bitatu.Ubushyuhe bwumuriro buri hejuru, ariko imikorere yimikorere ni mibi, ikoreshwa mukurasa amatafari, watts, ububumbyi bubi hamwe nubutaka bwibumba.