| 摘要 |
The structural element in block form, the external shape of which is determined by a bottom (3), a top (2) and four sides (12,13) adjoining one another. A first of the sides (12) is provided with a first slot (7) that opens on the first side and extends the complete length of the first side. The part of the first slot that is located in the structural element is delimited by a plastics material. |
