| 摘要 |
<p>The guide is for teaching tennis strokes. It has a guide (1,3) and a gripped handle (7). The guide has a fixed rail (1) shaped to match the trajectory and a moving slide (3) carrying the handle. handle. The guide is made up of profiled parts to modify the handle position according to its position on the rail. The handle can pivot relative to the moving slide which carries it controlled by a linkage.</p> |
