1, mbere yo gukoresha igomba kugenzura niba ibice bisanzwe.2, gukoresha kubahiriza byimazeyo bigomba kuba ibipimo byingenzi byateganijwe, ntibigomba kuba birenze urugero birenze urugero, cyangwa mugihe uburebure bwo guterura cyangwa guterura tonnage kurenza ibiteganijwe hejuru ya silinderi bizaba ari amavuta akomeye.3, ...
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