Answer
'Isoko ryamasoko' nigihombo gihoraho cyuburebure kibaho mugihe isoko yambere igabanijwe kugeza kurwego rwo guhangayika kurenza urugero rwibintu. Kugirango ubaze ibi mugihe cyo guterana, amasoko akenshi yashizweho nuburebure bwubusa $ H_f $ hejuru gato ugereranije nagaciro. Mugihe cya 'Perezidansi' cyangwa 'Ubukonje bukonje', uwabikoze ahagarika isoko kugeza murwego rwo hejuru. Ibi bitera impagarara zingirakamaro zisigaye (autofrettage effect) ituma amasoko akora kumitwaro iremereye mugihe kizaza nta yandi mananiza. Niba isoko itarashyizweho mbere, injeniyeri yinteko igomba kubara $ 5-10 \% $ igabanuka ryumutwaro nyuma yubushyuhe bwa mbere bwubushyuhe cyangwa ubukanishi. Ku $ 17-7PH $ CH900, kubanza gushiraho ni ngombwa kugirango uhindure isoko kugirango ubone ibikoresho neza.
