Ключевые слова: abstract, already, aperture, background, black, closeup, construction, control, covered, design, drainage, erosion, foundation, function, grass, greenery, grid, ground, hexagon, hill, honeycomb, industrial, management, material, nobody, outdoor, pattern, plastic, polyester, polymer, prevent, protection, ravine, reinforce, retaining, roadway, safety, sediment, slope, soil, strengthening, surface, technology, texture, using, wall,