The body is built from balsa wood, and the wings powered by a wire crankdriven by a rubber band.
燕尾蝶的身体是用轻木做的，而翅膀的动力来源为用橡皮圈驱动的金属曲柄。
2
The flywheel which is driven by an electric motor and "V" belts stores energy that is used only during a small portion of the crank revolution namely during deformation of the material.
飞轮由电机和三角皮带驱动，飞轮积聚地能量仅在曲柄转动地小部分范围，即材 料变形地时候才释放出来。
3
The mechanism driven by a bidirectional pneumatic cylinder for climb robot is composed of two groups of slider-crank mechanism in series.