| 摘要 |
<p>A push-pull bicycle used for both traffic and body building features that its frame, to which the front and rear wheels, handlebar, saddle, pedals and drive mechanism are installed, is divided into two parts which are pivoted to each other. And the arms, buttocks and legs of a rider are cooperated to make the two parts of frame move relatively to each other about pivot and the rear wheel is driven via a driving mechanism.</p> |
