| 摘要 |
Cylindrical structure comprising a vertical wall (3) and a bottom wall (2), said bottom wall having a plurality of sectors (4) that are mirror images of each other in rotation, each sector comprising a plurality of adjacent rectangular elements (8), characterized in that said bottom wall is in the shape of a regular polygon, each side (6) of which corresponds to one of said sectors, the edges of the rectangular elements of a sector being respectively perpendicular and parallel to the side of the polygon corresponding to said sector. |
