在林带上部，有林带间的阻滞减速区和林带后的涡旋减速区，在林带顶后部有集流加速区。
In the upper layer, there are the blocking speed-down zone inter-belt, the whirling speed-down zone behind the belt, the conflux accelerating zone just behind the top of shelterbelt.
结合物理量场的分析，建立了强锋区和暖涡旋两类典型特大暴雨系统的概念模型。
Combined with the analysis of physical parameters, two kinds of conceptual models of typical regional heavy rainstorm systems about strong frontal zone and warm vortex are found.
速度图上涡旋状回波区对应着连续出现中气旋的现象，说明强风暴单体为具有涡旋形态的超级单体；
The fact that the vortex-shaped area in the velocity map had a continuous mesoscale cyclonic flow indicates that the severe storm was a supercell storm.
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