Square root method is one of direct methods, which is an effective method for the solution of symmetrical positive liner equations through triangle decomposition of symmetrical positive matrix.

直接法中的平方根法，就是利用对称正定矩阵的三角分解而得到的求解对称正定方程组的一种有效方法。

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Regarding asphalt pavement as an axial symmetrical body of multilayered saturation elastic half space, the fundamental thermal Biot consolidation theory and seepage flow equations are introduced.

将沥青路面视为多层饱和弹性半空间轴对称体，引入比奥渗流固结理论和渗流方程。

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