| 摘要 |
<p>The sailboard is made from two halves of plastics. Each half has a hollow section with stiffening ribs. A longitudinal rib (3) fits on the centre line of each half and cross ribs (4) are located along the length. Top and bottom halves are locked together by vertical studs and slots along the edges of the outside mating flanges. Pads (11, 12) accommodate the centre plate and rudder. The pads have a central slot for the rudder plate and centre plate.</p> |
