In order to reduce model error, we use non-uniform grid, if the parameter's changing is fast, we use fine grid, else we use coarse grid.

为了降低模型误差，引入非均匀网格，并且自适应的在参数变化快的地方用较细网格，其他地方用较粗网格。

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Hence, these local and parallel algorithms only involve one small original problem on coarse mesh and some correction problems on local fine grid.

因此，这种局部和并行算法仅仅涉及一个粗网格上的整体逼近和细网格上的局部校正。

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Hence, these local and parallel algorithms only involve one small original problem on coarse mesh and some correction problems on local fine grid.

因此，这种局部和并行算法仅仅涉及一个粗网格上的整体逼近和细网格上的局部校正。

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