A seventh extra anchor toward the ceiling, not physically connected, is added in order to maximize double curvature along the surface, and therefore embedding inherent stiffness.

第七个锚朝向天花板而没有物理连接，它的增加使得沿着表面的双曲率最大化，因而嵌入了内在刚度。

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And in the surface of the cement mortar, contains alkaline materials, therefore, embedding common glass cloth fabric, does little.

而在面层砂浆的水泥里，含有碱性材料，因此，埋入普通玻璃纤维网布，起不了什么作用。

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Firstly, a group of lines through the model center depending on a pseudorandom number is generated. Then the intersection points of these lines and the model's surface are chosen as embedding objects.

算法利用伪随机数产生经过模型中心的直线，选取以直线与模型交点为球心的球形邻域作为嵌入对象，通过抖动调制邻域内顶点的重心来嵌入水印信息。

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