| 摘要 |
<p>The element is used in a construction toy and is made from injection moulded plastics. It has long sides (4a, 4b), connected by means of a longitudinal membrane (3). The two sides are folded about this membrane to form a triangular section (2), the third side being open. Each side is pierced at intervals with holes (7, 8), these being used for connecting links (5) between several smaller triangular sections to form one larger triangular section. The holes are shaped to hold locking pins for the connecting links and these latter may be replaced by a single internal triangular shaped element performing the same function.</p> |
