| 摘要 |
<p>The jigsaw comprises several pieces (1) which are assembled to form a predetermined appearance. Each piece comprises a tongue (2) or a cavity for receiving the tongue of another piece. Each tongue or cavity is bevelled (4) relative to the surface (1a) of its periphery and also have a counter-bevel (6) extending over a part of the tongue or cavity. The jigsaw pieces interlock more securely than existing jigsaw pieces.</p> |
