• 1. biharmonic function: 双调和函数 | 双谐函数 | 双低函数
• 2. biharmonic c function: 双谐函数

• 1.The method in this paper is much more convenient than that of Lekhniskii's with biharmonic function.
  本文的方法比列赫尼茨基的重调和函数法更为简便。
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• 2.According to the nature of two-dimensional biharmonic equations, this paper obtains a polynomial solution of the biharmonic equation for stress function by means of the MATHEMATICA software.
  根据二维双调和方程的特点并借助于MATHEMATICA软件，得到了应力函数双调和方程的多项式解答。
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• 3.By using Green function, the boundary integral formula and natural boundary integral equation for the boundary value problems of biharmonic equation were obtained.
  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。
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