Umuyoboro wibyuma ukoreshwa mugutanga amazi nifu yifu, guhanahana ubushyuhe, gukora imashini zikoreshwa nibikoresho, nibikoresho byubukungu. Imiterere yubwubatsi hamwe nicyuma cya truss, inkingi nubufasha bwa mashini, birashobora kugabanya uburemere, kuzigama ibyuma 20 ~ 40%, kandi birashobora kubona imashini ikoreshwa ...
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