Based on auroral observations of a multi channels scanning photometer at Zhongshan Station, Antarctica and solar wind parameters data obtained by WIND Satellite at the upstream of the bow shock in 1997 and 1998, the dependence of the high latitude postnoon auroral intensity upon the solar wind parameters are studied quantitatively.

In this paper, we will give the cherecterizations of strongly extremely rotundity and strongly extremely smoothness in substitution spaces P XX n.

The result of the experiment indicated that the strength limit and elastic modulus of the material can increase after annealing treatment within the temperature range, but at the same time, the material became crisp and its plasticity declined remarkably.

Using thermal strength experiment to test and determine the pivotal parameters such as ultimate strength and thermal stress at the complicated condition of transient heating is very important for reliability estimation,life prediction of aerospace materials and security design of high-speed flight vehicle.