英语语法分析

At maturity stage, the sustaining mesocyclone is the most important characteristic.

成熟阶段最重要的特征是持续存在的中气旋。

The analyzed low-pressure center at the surface was located ~8 km east of the mesocyclone.

所分析的地面低压中心位于中（尺度）气旋之东约8公里处。

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。