With the help of the conformal transformation, we transform a simply connected region and its boundary into the upper half plane and real axis.

借助保形变换将单连通区域及其边界化为上半平面与实轴。

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Furthermore, the 3-d boundary value problem in boundary layer region is decomposed to 2-d plane strain and torsion problems.

进一步在边界层区域将三维的边值问题分解成二维的平面应变和扭转问题。

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