| 摘要 |
A skid for moving on snow, ice and water, such as a ski or a snowboard, consisting of a sliding surface (1) which touches the surface of snow, ice or water directly, and its opposite, top surface (4), characterized by the fact that its sliding surface (1), at least, has a shape of a wave (3) with a frequency of more than 2.5 waves per its length, along its long axis (2), or its top surface (4), at least, has a shape of a wave (3) with a frequency of more than 2.5 waves per its length, along its long axis (2).
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