| 摘要 |
PURPOSE:To enhance the beautiful sight of body by a method in which a color board is cut into necessary shape and sizes and bonded to the exposed portions of blocks for revetment or steps. CONSTITUTION:A color board 3 is cut into a necessary shape and also into a necessary size by utilizing its grooves 3C. The boards 3 so cut are bonded through an adhesive to the upsides of blocks 2 for revetment or steps laid on the inner surface of a levee 5 in river.
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