| 摘要 |
<p>A long building element from plastic, metal, ceramics, glass, composite materials or their combination has intersection like square or rectangle, whereby at least one side (1) is missing and so intersection can be U-, L- or I- shaped, eventually he can have also arch shape or be broken in angle. At least on two opposite walls are locks (4) groove type on one wall and keys (5) T-, O-, V-, I- shaped and so (20), (21), (22), (23) on the opposite wall. They can be identical on the one wall or they can alternately change, that opposite locks will be reverse type. These locks are divided at short sections. On the two opposite walls are hooks (24) and (25) for anchoring insulation panels and plaster boards.</p> |
