The heavy rain is presented under the condition of the strong positive vorticity, convergence, vapor flux convergence in middle and lower troposphere and stronger divergence at upper troposphere.
大暴雨发生在对流层中低层为气旋性涡旋、流场辐合加强、水汽通量增加、水汽通量辐合加强，并伴有高层较强辐散的情况下。
The effect of atmospheric entropy divergence, especially in mid-and upper-levels, on theoccurrence and maintenance of heavy rain is as important as latent heating, even more important.
大气熵辐散，特别是中、高层的熵辐散，对暴雨发生和持续的作用，不仅和潜热加热同样重要，甚至更有决定性意义。
The open air space with convergence at middle and low layers and divergence at high layer was beneficial to maintaining typhoon force as well as heavy precipitation.
结果表明，强大深厚的台风低压系统是降雨的前提条件，中低层辐合、高层辐散的散度场有利于台风势力的维持，对强降水持续起到重要作用；
There was a good consistency between the location of the center of heavy rainfall and lower-level convergence, upper-level divergence and vertical ascent motion.
强降雨中心出现的位置跟低层辐合高层辐散出现的位置和最大垂直速度上升区有很好的一致性；
There was a good consistency between the location of the center of heavy rainfall and lower-level convergence, upper-level divergence and vertical ascent motion.
强降雨中心出现的位置跟低层辐合高层辐散出现的位置和最大垂直速度上升区有很好的一致性；
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