利用Green函数，根据双调和方程边值问题的边界积分公式和自然边界积分方程。
By using Green function, the boundary integral formula and natural boundary integral equation for the boundary value problems of biharmonic equation were obtained.
借助降维展开公式，我们对积分构造出具有代数精度的边界型求积公式。
By using the lowering dimensionality expansions, we construct boundary type cubature formulas with the algebraic precision for integrals.
边界型求积公式是数值积分法研究方向早就被注意的问题。
The construction of boundary type cubature is a problem that has been noticed for a very long time in numerical integration.
由边界积分方程推导了泊松问题和线弹性力学问题的广义间接边界元法的基本公式。
The fundamental formulas of generalized indirect BEM for the Poisson 's and linear elasticity problems are proposed initiating from the boundary integral equation.
为克服积分困难，给出了一个轴对称导热的边界元简化公式。
To overcome the difficulty in integration, the simplified formulae in BEM of axisymmetric heat conduction are given.
为克服积分困难，给出了一个轴对称导热的边界元简化公式。
To overcome the difficulty in integration, the simplified formulae in BEM of axisymmetric heat conduction are given.
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