finite element subspace

例句：

1. 1.In the finite element method, the subspace is used to approximate the solution of a system of equations.
   在有限元方法中，子空间用于近似方程组的解。
2. 2. The finite element subspace is defined by the shape functions and their derivatives.
   有限元子空间由形状函数及其导数定义。
3. 3. The finite element subspace is an important concept in structural analysis.
   有限元子空间是结构分析中的一个重要概念。