Basing on the data of the CT scanning,density damage increment,pore damage increment and total damage increment are defined.

Research on financial compensation for generation deviation based on incremental transmission losses;

On the basis of the measurements of the aerodynamic parameters on 12 cross - sections from the up stream to the downstream of the cascade and the static pressure coefficients on 9 profiles along the blade height, the origins of the loss growth of the airflow passing through the cascade were analysed.

With the help of statistic principle, the estimtion ormulas ofthe antenna gain loss, beam width and siedlobe level in sparse array are derived.

The optimal feeds phase center of reflector antennas existing reflector surface errors can be worked out to obtain the minimal gain loss by this model.