Based on other materials, including pottery sherds, believed found with the slab, team concluded it is roughly 2,900 years old. Isolated signs similar to those inscribed on the block also appear on even older figurines found elsewhere in Mexico.
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Its physical model is based-on deep understanding of cloth material property that differs from rubbers and other elastic materials.
它的物理模型为基础，对布料的财产，由橡胶弹性材料和其他不同的深刻理解。
When the first building production peak, peak production side to echo each other in determining the theme based on the materials to effectively use.
筑造时先制作主峰，在确定主题基础上制作侧峰才能相互呼应，材料也才能有效利用。
On the other hand, the materials based on aliphatic diisocyanates are famous for their unchanged whiteness and they will not change to yellow when irradiated with ultraviolet, visible light or heated.
另一方面，基于脂肪族二异氰酸酯的材料以其独有的白色而著称，且其在紫外光、可见光和热条件下都不会变黄。
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