| 摘要 |
<p>A knockdown structure including at least two panels adapted to extend transverse to each other, an intermediate bar segment attached to a side face of one of the panels and two end bar segments attached to side face of the other of the panels and disposed at opposite ends of the intermediate bar segment. The intermediate and end bar segments have end faces in abutting relation when the bar segments are in alignment and the abutting end face on the intermediate and end bar segments define supplementary angles extending oblique to both of the panels at angles such that the intermediate bar segment forms a wedge type interlock with the end bar segments. 53</p> |
