It should be noted that typically the computer time required increases several-fold when the gridspacing is halved.
值得注意的是如果网格空间减少一半(意味着网格函数增加)，计算机运行的时间则需要翻几番。
2
The factor of the mixed partial derivative term controls the grid orthogonality. The other two factors of second order partial derivative terms control the gridspacing.
结果表明 ：方程中混合偏导数项系数具有控制网格正交性的作用；
3
Great designersunderstand the importance of using a grid and within that grid they canfind the spacing that is required to pull great effect from the design.