| 摘要 |
The tile has a single strip (2) formed on the visible surface (7) of the tile (1, 1'), parallel and close to one of the long side edges (4, 4'). This strip is darker than the rest of the surface. One connecting or locking element (5) runs along the same side, and the other (6) is on the opposite long side and is complementary to the first one. |
