It analyses the relation by Newton's iteration method, which shows the select of the time step has a relation with the mesh size and dispersion error.

利用牛顿迭代法对其进行了全面的分析，发现了时间步长的选取与网格、色散误差的大小有一定的联系。

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Click on the path to add the mesh, then select the white arrow tool, and select the end point.

在路径上单击添加网格，然后选择白箭头工具，选择结束点。

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Then select the cross points of the two Mesh Paths with the White Arrow Tool.

然后使用白箭头工具选择2个混合路径的交叉点。

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