Umuyoboro wibyuma utagira ingano usanzwe ukoreshwa mu makara, gutunganya imashini no mu zindi nganda.Ubu bwoko bwicyuma kitagira icyuma gikonje cyane kandi gishyushye ubwoko bubiri.Hariho ubwoko butanu bwo gutondekanya, aribwo bushyushye buzengurutse urukuta rwinshi rutagira icyuma, imiyoboro ikonje ikonje ikonje idafite umuyoboro wicyuma, icyuma gikonje kizengurutse urukuta rukomeye rutagira icyuma kandi rusohokamo urukuta rwinshi rutagira ibyuma hamwe na jacking.

Mubikorwa byubucuruzi nyabyo, ubwiza bwurukuta runini rwumuyoboro wicyuma ntiruringaniye, hariho ibyuma byinshi byimpimbano kandi bitagira ingano byuzuye urukuta rudafite ibyuma, iyi ngingo ni ukumenyekanisha uburyo bwo kumenya uru rukuta rwimpimbano kandi rwuzuye urukuta rudafite ibyuma.

1. Imiyoboro y'ibyuma yibinyoma kandi idahwitse ikunda kuzunguruka.

2. Kugaragara kw'imiyoboro y'ibyuma yuzuye urukuta rw'icyuma akenshi iba ifite pockmark.

3. Ubuso bwumuyoboro wibyuma wijimye wicyuma ukunda gukomeretsa.

4. Kuvunika biroroshye kugaragara hejuru yibikoresho bitameze neza.

5. Umuyoboro w'icyuma ufite urukuta runini biroroshye gushushanya.

6. Imiyoboro y'ibyuma yuzuye urukuta idafite ibyuma byuma kandi bifite umutuku woroshye cyangwa bisa nicyuma cyingurube.

7. Umurongo uhinduranya umuyoboro wicyuma utagira inkuta ufite urukuta runini kandi ruto, kandi ibintu byo kuzura bikunze kugaragara.

8. Igice cyambukiranya umuyonga wijimye wicyuma ni oval.

10. Ibikoresho byumuyaga mwinshi wibyuma birimo ibyuma byinshi kandi ubucucike bwibyuma ni buto.

11. Imbere ya diameter yimbere yinkuta zibyuma byumuyaga uhindagurika cyane.

12. Ubwiza bwikirangantego no gucapa nibisanzwe.

13. Uwakoze uruganda rukomeye rwicyuma rwicyuma ntamodoka afite, kubwibyo gupakira birarekuye.Impande ni oval.

Umuyoboro munini wa kalibiri ni ibicuruzwa byunguka isosiyete yacu.Ibisobanuro dushobora gukora byerekanwe mubishusho bikurikira: