| 摘要 |
The invention relates to two-wheel human-powered bicycles. The inventive bicycle comprises front and rear wheels, a front fork, a handle bar, a seat slider mounted on a guiding frame in such a way that it is slidable therealong and cranks which are connected to a drive carriage axis, are parallel and unidirectional, whose length ranges from 20 to 50 cm and which are provided with pedals having foot fixing means. Said bicycle is driven by cyclic movements of hands, legs, back and abdominal muscles in such a way that the pedals are enabled to carry out one revolution around the carriage axis without dead points. |
