| 摘要 |
<p>The board is provided with a binding for the two boots of a person. Seen from the top, from the front (EF) where it has a maximum width (b), it decreases progressively up to the middle (AB), and increases again up to the rear part (GH). The front end is round, the rear end has two round portions and a straight portion. All of the lateral curvatures are provided so as to avoid any point of discontinuity. Seen side ways, the front of the board is curved upwardly.</p> |
