Research the basal concepts and formulas of coordinate conversion, the formulas of the radius of curvature in a normal section, the meridional length and the latitude of pedal are given.
对坐标转换的基本概念和基本公式做了研究，给出了法截线曲率半径、子午线弧长和底点纬度的解算公式。
The mean meridional speed field are concentrated systems and cyclone concentrated systems, Obvious concentrated interface on low-level on the vertical cross-section.
平均径向速度场特征为辐合系统和气旋性辐合系统，垂直剖面图上，低层有明显的辐合界面。
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