| 摘要 |
The invention relates to a load-bearing element, comprising load-bearing bars which are connected to one another in an articulated manner at adjacent ends, it being possible to move the load-bearing element from a functional state into a storage state and vice versa. The decisive advantage of this invention consists in the fact that load-bearing systems according to the invention (see Figure 14) can be assembled and dismantled with a rapidity which has been unknown hitherto. <IMAGE>
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