| 摘要 |
<p>A folding structure comprises a first set of links and a second set of links, a link from the first set being joined to three links from the second set at first, second and third pivot points along the length of the links from the first set, while a link from the second set being joined to three links from the first set at first, second and third pivot points along the length of the links from the second set. The structure has a folded structure where the first set of links lie substantially parallel and side-by-side, and the second set of links lie substantially parallel and side-by-side, and has an unfolded structure where the first set of links and the second set of links lie form a polygonal arched shape.</p> |
