| 摘要 |
<p>The panel has a wooden support panel (2) with a covering layer (3,4;5,6) on an upper surface. The plate has edge faces with multiple tongue and groove formations to allow the panels to interlock. Each outer edge face has a groove (7,10) and a tongue (8) which interlock with corresponding formations on adjacent panels and are superimposed. Each lower groove (7) is larger than the respective upper tongue or groove (10). the grooves and tongues can have a tapered cross section or can be wedge shaped.</p> |
