Like in an infinite flow, we find that laminar boundary layer, transition region and turbulent boundary layer also exist along a flat plate in open channel flow boundary layers.

试验研究发现明流光滑平板边界层中，与无限边界绕流平板边界层一样，沿平板有层流边界层，转捩区和紊流边界层三部分。

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The onset of summer monsoon in South China Sea region is characterized by the abrupt change of flow field in most years, but a few years characterized by harmonic change(no abrupt transition).

绝大多数年份季风建立时有环流突变发生，但也有少数年份呈调和变化或二次突变。

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