不稳定的形成和维持，是导致中尺度切变线上小尺度涡旋维持、加强，并产生强风暴雨的重要原因。
The forming and maintaining of K-H instability was an important reason of causing vortex on the shear line maintain, strengthen, and causing rainstorm.
这次强降水与中尺度切变线、雷暴高压和中尺度气旋等中尺度系统关系密切，为一次中尺度暖式切变线暴雨过程；
The heavy rainfall is dominated by a mesoscale warm shear line, having a closed relationship with a mesoscale system composed by mesoscale shear line, thunderstorm high and mesoscale vortex;
发现沿切变线走向有一条中尺度涡管，位于对流层中低层，高度呈波状起伏。
The results showed that there was a mesoscale vortex tube along the mesoscale shear line on the middle low troposphere, and its altitude varied in a wave shape.
第二阶段暴雨是由切变线上的强辐合及切变线上形成的边界层中尺度气旋造成的。
The second one was produced by a mesocyclone , which developed along the shear line, and the strong convergence.
第二阶段暴雨是由切变线上的强辐合及切变线上形成的边界层中尺度气旋造成的。
The second one was produced by a mesocyclone , which developed along the shear line, and the strong convergence.
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