As a consequence, the solutions now we have are all limited to such approximate ones as obtained by finite difference method, variational method and the method of finite elements.

因此，目前所有的解，均限于差分法及能量法所得的近似解。本文企图直接解微分方程，并满足包括自由角点的边界条件去求解。

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As it is known that the double set parameter method is an effective method for constructing finite elements of higher order problem (such as plat bending problem finite element).

众所周知，双参数方法是构造高阶问题有限元(例如薄板弯曲问题单元)的有效方法。

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The double set parameter method is an effective way for constructing finite elements of higher order problems (such as plate bending problem finite elements).

双参数方法是构造高阶问题有限元(例如薄板弯曲问题单元)的有效方法。

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