| 摘要 |
<p>The appliance consists of a support section, corresponding to the size of the human body, which is convex curved in its length. The ends of the support section are connected to a base section, having the same shape, as the support section, but an opposite curvature. Both sections have apertures for the fastening of sports appliances. The sections have steel tubes-or timber frames, with apertures (c) in their longitudinal sides. The free space between the longitudinal sides of the support section frame is covered by a cover (1), which has eyelets (K) at the points of the apertures.</p> |
