| 摘要 |
<p>1. Tile, as a wall or floor slab, preferably with a flat surface, with a substructure connected to the surface and traversed by passages and with tongue-and-groove-like strips in the lateral zone of the wall or floor slab, characterized in that all four side walls of the substructure are provided with matching tongue-and-groove-like strips (1, 2) and in that there are in the substructure, initially closes at the time of delivery and capable of being broken open by means of intended breakage points, passages (3, 4, 7, 11) which extends transversely to the lateral edges of the tile, the passages being capable of being broken open as required when the tile is laid.</p> |
