| 摘要 |
<p>A panel (1) is mounted on a frame (2) which in turn is mounted on a pivot (3) disposed parallel to the longitudinal axis of the panel (1). Jacks (4) connected to the frame permit tilting the panel (1) which constitutes the tennis court. In this inclined position of the panel (1), rainwater will not accumulate on the court and the court can be reused as soon as the rain ceases to fall.</p> |
