Birki na ganga: ƙarfin birki mai ƙarfi amma ƙarancin zafi mai zafi Tsarin aiki na birkin ganga abu ne mai sauƙi.Ya ƙunshi safofin hannu, birki na silinda, takalman birki, da sauran sanduna masu haɗawa, maɓuɓɓugan ruwa, fil, da ganguna na birki.Ta hanyar tura piston ta hanyar ruwa, takalmin birki...
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