This may occur after low-lying fields have been flooded following a severe thunderstorm or intensive irrigation.
这可能发生在一场大雷雨或集中灌溉使低洼田被淹没之后。
A typical low-level wind shear of thunderstorm activates long periodic oscillation of an aircraft, causing tracking deviation of the aircraft.
典型尺度的雷暴低空风切变以长周期振动频率激励飞机，使其偏离预计下滑航迹。
There are mesoscale low level convergence and high level divergence in the thunderstorm area.
同时又存在明显的低层辐合高层辐散的中尺度流场。
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