In this paper we propose so-called coupled 4-point difference schemes for the Laplacian operator over a class of parallel hexagon partitions of the plane.

本文提出平面上拉普拉斯算子在一类平行六边形网格上的成对4点差分格式。

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The operator in parentheses in (3. 54) is. called the Laplacian operator.

在(3.54)的括号里的算符叫做拉普拉斯算符。

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The operator in parentheses in (3. 54) is. called the Laplacian operator.

在(3.54)的括号里的算符叫做拉普拉斯算符。

youdao