Zomangira Zodzibowolera Zokha za Ulusi Wawiri
Zomangira zokhala ndi ulusi wawiri zimakhala ndi ulusi wawiri—umodzi mbali zonse ziwiri za screw shaft—zomwe zimawathandiza kuti azigwira kulemera kowirikiza kawiri kuposa zomangira zokhala ndi ulusi umodzi. Ulusi womwe uli mbali iliyonse umayenda mbali zosiyana, zomwe zimapangitsa kuti pakhale kulumikizana kwamphamvu pakati pa screw ndi zinthu zomwe zikugwiritsidwa ntchito kuti zigwirizane. Chifukwa cha mphamvu yowonjezereka komanso kulimba kumeneku, zomangira izi ndi zabwino kwambiri kugwiritsa ntchito pamene kulemera kwakukulu kudzaikidwa pa izo.











