对流层低层干位涡场特征表现为，风暴区形成干位涡等值线密集区和风场切变的耦合。
The dry PV field in the lower troposphere shows that the coupling of the dense PV isoline zone and the wind shear was formed in the storm area.
作用在任意运动物体（系）上的力和力矩可以分别表示成流场中动力学涡量的一阶矩和二阶矩随时间的变化率。
The force and moment exerted on the solid body are expressed as the rate of change of the first-and second-order kinetic vorticity moments, respectively.
模式模拟结果展现了南海流场的季节特征，在模式分辨率下表现出了多涡结构。
The simulated results show the seasonal characteristics and multi-eddy structure of the South China Sea current field.
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