Gukoresha ubushyuhe bwo hejuru cyane mumashanyarazi yumuriro nizindi nzego
Ubushyuhe bwo hejuru ni valve ikora mubihe byubushyuhe bwinshi, ikoreshwa cyane cyane muri peteroli, inganda zikora imiti, metallurgie, kubyara amashanyarazi nubundi nganda. Cyane cyane mubijyanye no kubyara ingufu z'amashanyarazi, akamaro ko hejuru ...
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