| 摘要 |
This device comprises vertical and horizontal elements, the vertical elements consisting of uprights 2, 3 joined in pairs by one or more panels 4, this device being characterised in that the said uprights 2, 3 each comprise longitudinal grooves 5, 6, 7, 8 in which are inserted tenons 11, 13 provided at the ends of the said horizontal elements 9, 10 and in that the means hold the horizontal elements 9, 10 in position in the said vertical elements 2, 3. <IMAGE>
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