Combined model on the basis of the Finite Element Method and Multisurface Function was used to improve approximating precision and reliability in modelling abnormal height surface.
应用有限元法与多面函数法的加权综合模型改进拟合模型在逼近高程异常曲面时的拟合效果。
In the finite element method, one of the restrictions on the approximating functions is relaxed.
在有限单元方法中，放开了定近似函数的限制。
The equation is discretized by discontinuous Galerkin finite element method, that is approximating functions being discontinuous at the nodes of partition in time.
利用间断时空有限元方法对方程进行离散，即允许近似函数在时间节点处是间断的。
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