通过对坡印亭矢量的散度的分析，阐明了电机气隙中径向能流和切向能流的变化和传递。
The variation and transmit of the radial and tangential energy flow in the air gap of electrical machines are illustrated by analyzing the divergence of Poynting vector.
由质量守恒定律，质量密度增量来自未挠动的质量密度的散度和位移矢量场。
According to the law of mass conservation the incremental mass density can be inferred from the divergency of the scalar unperturbed mass density and the vectorial displacement field.
通过对一次暴雨个例的比较研究表明，在雨带形势和暴雨中心位置的动力识别方面，改进的Q矢量分析方法比传统的单纯依靠Q矢量散度分析方法具有更好的效果。
Through a case study of a torrential rain event, potential advantages of the improved Q analyses approach can be seen in dynamic identification of both the location and the Po.
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