With the numerical simulated data of the storm, the structure and evolution of the helicity, superhelicity and their dynamical influences on the development of the storm are investigated.

原有对流单体在原地维持成熟，表现较强稳定性，而分裂单体在动过程中，逐渐向成熟位相发展，并且又分裂单体。

We describe a subfringe integration interferometry for which the phase information is evaluated only from one interferogram.

叙述了次条纹积分干涉计量原理，仅用一幅光载频干涉条纹图获取全部位相信息。