| 摘要 |
<p>A panel (2) for floors, walls and ceilings, which panel (2) is provided with a plurality of alternating ridges (8) and valleys (l0), the ridges (8) having flat peaks (l4) which define a flat surface which is interrupted by the valleys, the valleys (l0) having flat bottoms (l6) which define a second flat surface which is interrupted by the ridges, each ridge being provided along its length with a plurality of spaced apart apertures (l8), the apertures (l8) extending over the entire height and width of the ridges so that the apertures (l8) extend from the flat bottoms (l6) of the valleys to the flat peaks (l4) of the ridges, and the apertures being aligned in rows along the ridges.</p> |
