| 摘要 |
A revetement for bank, water-retaining structure and the like comprises elements (1) made of concrete or a similar material, which elements are approximately prismatic in the height direction and each have two transverse faces (7, 8) and two longitudinal faces (5, 6) which run parallel to their height direction. One transverse face (7) of each element is made a concave shape, and the other transverse face (8) is made a corresponding convex shape, in such a way that the elements can rest with their transverse faces against each other in various rotated positions.
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