| 摘要 |
The surface (12) of a body (10) immersed in a fluid flow has projections (14) on the base surface. In order to design a more flow-favourable surface (12) of a body (10) immersed in a fluid flow and having projections (14) on the base surface, the projections (14) are surrounded by two demarcation lines (18, 20), as seen from above the surface (12). The first demarcation line (18) is longer and more curved than the other demarcation line (20), so that the projections (14) have the cross-sectional area of an airfoil.
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