Amashanyarazi ya silindrike
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Ubu bwoko bwimipira ifite imipira ibiri mumbere hamwe ninzira isanzwe ihuriweho nimpeta yinyuma.Bifite umutungo wihariye wo kwishyira hamwe.Ku buryo bwo guhuza inguni bwemerera hagati ya 1.5 ° kugeza 3 ° ni umwihariko wo gusaba muri aho kudahuza kwaturutse ku makosa yo gushiraho cyangwa gutandukana.