| 摘要 |
<p>The device is composed of four corner posts 1, 2 with recesses slanting upwards, into which leaves 5, 6, which are likewise provided with recesses and which form the only connection between the posts 1, 2, are inserted. The proposed material is aluminium or aluminium alloys for the corner posts 1, 2 and metal-plastic-metal laminates for the leaves 5, 6. <IMAGE></p> |
