| 摘要 |
<p>The underlay plate, for the production of concrete bricks, has a wood core (1) flanked by steel plates (2,3). Pins (4) are welded to the inner sides of the steel plates, as special needles to anchor into the wood core. Profiles (8) are fitted to the edges, to shroud the wood core, and seals (9) are at the edges between the steel plates and the core. The wood core is composed of boards (7) glued together, or it is of a compound wood material.</p> |
