Wind hails and floods, happened rarely in history,in 1994 in Jiangxi province, caused damage area about 440 thousand hectares,victims of calamity of 11 million and 440 thousands.

Most of the reclaimed areas are located in the arid areas and the zones with vulnerable ecological environment, and the frequent occurrence of strong wind and hail disasters is an important factor affecting the agricultural production and economic development in the reclaimed areas.

In the paper, the author selects five index, and uses the method of fuzzy cluster analysis for regionalizing strong wind and hail disaster in Jinsha River Basin of Yunnan Province.

A comprehensive analysis of rainstorm weather process and hail with gale weather process is made on the basis of breaking up evolving theory and by using the breaking up evolving figure and v 3θfigure , and the results indicate the great suggestive role of breaking up evolving theory in the forecast of rainstorm weather and hail weather with gale.

Aerocraft is easy to impact with hailstone and may cause serious damages during its flight,so it′s necessary to investigate hail impact on aerocraft by trial system.

The methods of speedup are proposed under the limitation of the strength of hailstone pill.

The hailstone impacting test system is constructed basing on the theory of air gun which energy is offered by compressed air.

Studies on the Chemical Constituents of the Fatty Oil from the Seed of Thladintha dubia Bunge;