| 摘要 |
Component is made from a rectangular sheet of stiffly flexible material and is divided by scoring into a central panel and three end panels on each side, all the panels in a row. The end panels are folded into tubular triangular shapes which overlie the central panel and the vertices of the triangles remote from the central panel are drawn together and held in drawn-together shape by elongate plastic fasteners of U-shape cross-section.
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