由于这些函数都使用堆栈语法，所以您可以对形状应用层次转换，并在后面将它们删除，以恢复原有矩阵。

As these functions use stack semantics, you can layer transformations for shapes and later remove them to restore the original matrices.

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如果用这种新的形状函数，则由此计算求得的刚度矩阵，不论三角圆环有限元的位置是否靠近轴线。

The calculated rigidity matrix is convergent everywhere, including these triangular toroidal element closed to the symmetrical axis.

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