For incompressible boundary layer or plane channel flow, typical three-dimensional structures would appear.

对不可压缩边界层或平面槽道流，还会出现典型的三维结构。

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See from the composing, and the campus culture can mostly is divided into three level of structures, namely material layer, system layer is with the spirit layer.

从构成上看，校园文化大致可以分为三个层次，即物质层、制度层和精神层。

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Dispersion equations of torsional modes in three different two-layer pipes are obtained by means of analyzing different stress and displacement boundary conditions of these structures.

通过分析不同的应力和位移边界条件得到了三种不同双层管结构中扭转模态的频散方程。

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