| 摘要 |
The cover (3) consists of a layer of supple material (4) such as leather or fabric that partially covers the rider's body, and it is stiffened to prevent it flapping when the vehicle (1) is in motion by having one or more supple tubes (8) on each side. The tubes are aligned in a fore and aft direction so they are inflated and made rigid by air passing through them when the vehicle is moving. Each tube has a cross-section that reduces progressively between its inlet (9) and outlet (10) ends, and can be equipped with a system for adjusting the section of its inlet and outlet.
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