摘要 |
<p>The nets are for tennis players to practice serving. They are held on a support running between two x-shaped end frames (20), equal in length to half the width of a tennis court. One net is supported vertically (30) and its upper edge is at the same height as a normal tennis net. Behind this there is a net (31) to catch balls that have been correctly hit, whose upper edge is at a height that delimits the trajectory of successful balls. The lower part of this second net is folded forwards to form a pocket (31a) to collect the balls.</p> |