| 摘要 |
<p>The parachute production process for paragliding, hang-gliding, rescue etc. involves strips (12a, 12b, 12c) or pieces of material being joined to each other in a section arrangement (11) by welding the material of the strips together at their edge regions. Three or more-ply material may be welded together, with at least one layer having part of the surface lying outside the welding diverging from the surface of the other layers.</p> |
