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The five-fold symmetrical tile that can be self-coupled to build up a five-fold tiling,periodic and four-way symmetry tiles (crystals) to infinity
四向對稱十邊形平鋪
But this can construct four way symmetric decagonal tile
一些用於構建二維晶體的較小晶胞
Some of the smaller unit cells used to build two-dimensional crystals
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