求翻译：然后，应用最低阶的混合元，我们构造网格上单元和边的基函数，接着采用方法，将此模型问题转化为一个线性代数方程组，从而转化为求解方程组的系数。最后，通过我们可以得到近似解与真解的误差估计以及收敛阶，从而验证了应用最低阶元的混合有限元方法的正确性与准确性。是什么意思？

Then, the application of the lowest order mixed finite element, we construct the grid unit and the edge of the base function, and then using the method, this model into a linear algebraic equations, which is transformed into solving the coefficients of the equations. Finally, we can get the approxim

And then, the application of the minimum order $mixed, we construct a grid on the base unit and function, followed by method, this model will be a problem into a linear algebraic equations that can be translated into a set of equations for the coefficients. Finally, we can get by with an approximate

Then, applies the most low-order mix Yuan, on our structure grid the unit and the side primary function, then uses the method, this model question transformation is a simultaneous linear algebra equation, thus transforms as the solution system of equations coefficient.Finally, may obtain the approxi

And then, applying mixed finite element of lowest-order, we constructed on a grid basis function of the unit and, then, the model problem into a linear algebraic group, into a factor for solving equations. Finally, we can get error estimation of the approximate solutions and real solutions, as well

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