| 摘要 |
<p>The wedge (1) i.e. casting element, has a base surface (2) and a ramp surface that includes a structure i.e. teeth, formed at free side edges (3). The structure includes slide obstacles that are arranged against a wedge tip (4) that is openly formed. The wedge is formed from a folded sheet metal. The wedge is partially made of concrete.</p> |
