当高空槽区内气流为辐合时，称为辐合槽。
结果表明，无论是辐合还是对流，南海夏季风槽都强于副热带夏季风槽。
The results show that the SCSSMT is stronger whether in convergence or convection than the STSMT.
低层水汽输送，造成中纬度暴雨区强水汽辐合和不稳定能量积聚，故槽前降雨的强度与其南方台风东侧的水汽输送有着相当密切的关系。
The results show that typhoon intensity can have influence on the water vapor transport to mid-latitude area by the southeasterly jet on the east of the typhoon.
海陆风辐合和地形抬升是海南低槽类冰雹发生的主要触发机制。
The convergence line caused by sea-land breeze and the topographic forcing effect are the main mechanism that triggers the low-trough type hail in Hainan.
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