| 摘要 |
Pyramidal structure has dimensions as half of the side of the base of the side facet, dimension of the side of the base of the side facet, height and length of the diagonal of the side facet. According to the invention, the ratio is taken: the dimension of the half of the side of the base of the side facet û 3 parts, dimension of the side of the base of the side facet û 6 parts, height û 4 parts, length of the diagonal of the side facet û 5 parts.
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