The variation law of the performance parameters is draw from experiment after blade extension, The conclusion can be used to predict the parameters of lengthen blade for the centrifugal fan of the same type.

The method is adapted not only in the analysis of bending out of shape in elasticity when a long blade of steam turbine has been rotating,but also dynamicstate analysis of ther blades[1].

With the improvement of design and manufacture of steam turbine,the long blades with complex dampers are used widely in supercritical and ultra-supercritical steam turbine,the previous reliability evaluation method of blade shows limitations,it is necessary to develop a method to evaluate the reliability of blade based on .

Two ways of simulating long blades,used in the mentioned calculation,are proposed.

Application of slotted technique on splitter blade in centrifugal fan;

For a transonic radial inflow steam turbine,the aerodynamic design optimization analysis is conducted by means of three-dimensional numerical simulation,and the aerodynamic characteristic of TC-4P profile is presented through varying blade number and long-short blade configuration and analyzing an effect on the inner flow field of impel- ler.

Effects of pruning to promote trunk extension on leaf growth of Paulownia.;

The influences of the plastic ground covers and the planting time on leaf growth of maize;

Dynamic changes of leaf growth and three physiological indexes of Platanus ×acerifolia during leaf expansion stage