| 摘要 |
<p>The file consists of a cover and a number of separators, each with two sides (8a, 8b, 8c; 9a, 9b, 9c) and a spine, all made from a thermally weldable material, assembled on a supporting surface (22) and welded together along the spine after assembly. The cover and separator are made with holes (20) that are aligned with studs (23) projecting from the support prior to welding so that they are all aligned correctly.</p> |
