Answer
Gutakaza uburebure bwubusa, cyangwa 'gushiraho,' bibaho mugihe imihangayiko ikora irenze imipaka yibikoresho. Ibi bikunze kubaho mugihe isoko yamenetse hejuru yuburebure bwayo $ H_s $ mugihe cyo kwishyiriraho, nubwo uburebure bwo gukora $ H_1 $ butekanye. Guhangayikishwa n'uburebure bukomeye $ \ sigma_s $ bigomba kubarwa. Niba $ \ sigma_s> \ sigma_ {umusaruro} $, isoko izahinduka plastike. Kugira ngo dukemure ibibazo, dukora 'Presetting' inzira mugihe cyo gukora aho isoko yamenetse kugeza inshuro 3. Ibi bitera impagarara zisigaye zo guhagarika umutima. Niba isoko idatakaza uburebure, ibikoresho bigomba kuzamurwa bigashyirwa hejuru cyane (urugero, kuva 302 kugeza 17-7PH) cyangwa kubara umuraba $ N $ byiyongereye kugirango ugabanye imihangayiko kuri buri muhengeri.
