سیستم تعویض دنده
طراحی سیستم تعویض دنده اتوماتیک دوچرخه
/automatic-bicycle-gearboxRecently, bicycles are used as exercising machines and traffic vehicles. Planetary gear trains can be used as the transmission systems for bicycles.
Recently, bicycles are used as exercising machines and traffic vehicles. Planetary gear trains can be used as the transmission systems for bicycles.