quadratic boundary elements 二次边界元
linear and quadratic triangular elements 三角形线元与二次元
quadratic triangular finite elements 三角形二次元
quadratic polynomials in several elements 多元二次多项式
quadratic serendipity block finite elements 二次奇妙族长方体有限元
The three-dimensional boundary element method for elastic materials was extended to develop a fast multipole expansion formulation of the fundamental solutions for quadratic elements.
在三维弹性力学边界元法的基础上，推导出二阶单元的基本解快速多极展开格式。
The results show quite distinct stress peaks at layer interfaces, and it was found that even with 16 quadratic elements over the layer thickness these values have not reached an acceptable accuracy.
计算结果表明，在铺层分界面上有十分明显的应力峰，并发现，即使沿铺层厚度使用16个二次元素，这些值仍没有达到令人满意的精度。
It mainly discusses units, prime elements, factorization, the properties of residue class ring of quadratic domain in the paper.
主要讨论了二次整环的单位、素元、因子分解、二次整环的剩余类环的性质等问题。
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