| 摘要 |
<p>A box-shaped device for holding water, such as a rainwater box, comprising at least four partially open side walls and a panel extending between the side walls and having a rectangular shape, the width of which is half the length. The panel is provided with an inspection passage which is positioned centrally in one of the two square panel halves of the panel defined by the rectangular shape, so that whenever the rainwater boxes are stacked, a vertical passage is always provided for passing through, for example, an inspection camera.</p> |
