The results show that unbalance force of atmospheric motion and the coupling reaction among convective cloud cluster and moisture frontal zone and low level jet lead to the continuation of strong convergence in low layer and the maintenance of torrential rain 分析结果发现，大气运动非平衡强迫、凝结降水的非均匀分布与强烈垂直风切变的耦合作用、 “湿度锋”与低空急流的耦合相互作用通过促进低空辐合流的维持，导致了对流云团和暴雨天气的持续。
