| 摘要 |
<p>The device (1) has plates whose molds (4) are joined and welded with each other to form a mold plane that is surrounded by a maintenance framework (20). Parallel cross-pieces (25) perpendicularly extend between two parallel members (24) of the framework at a lower level of the framework in which the members extend. The cross-pieces are reinforced longitudinally using a metal insert.</p> |
