| 摘要 |
The intention is to be able to construct a picture frame to form a coherent composite structure. For this purpose, the picture frame consists of at least one lower, polygonal plate (11), at least one upper, transparent, polygonal plate (12), which is congruent with the lower plate, and fastening elements (13) which connect the lower and upper plates to one another at their corners or edges in such a way that the plates (11, 12) form a coherent composite structure (Fig. 1). <IMAGE>
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