... nodal equilibrium equation 节点平衡方程 nodal expansion method 节块展开法 nodal force 节点力 ...
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nodal fourier expansion method 节块傅立叶展开法
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In this paper, the mathematical theory of the nodal expansion method for 2nd order elliptical equation including variational principle and error estimate is established.
本文建立了二阶椭圆方程节点展开法数学理论，包括变分原理和误差估计等。
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