| 摘要 |
<p>The floor panel has two identical frames (32,34) each having an end bar (36,42), a cross bar (40,46) and longitudinals (38,44) which are mutually parallel and with their ends articulated on the cross bar and end bar. The longitudinals of one frame are intercalated with those of the other frame. The longitudinals are freely intercalated so that the traverse of one of the frames cooperates with one of the faces of the bars of the other so that when a load is applied on the upper faces of the bars, the two portions of the panel rest in the same plane.</p> |
