Based on the explanation of the property and summation rule of finite rotation,the corresponding formulae of the variation of the axis of rotation is deduced.

Using the technique of collocated grid,a numerical method of two dimensional incompressible SIMPLEC algorithm in general curvilinear coordinates is adopted to calculate the turbulence flow in the vane channels of centrifugal compressors with four typical loading rules,including former-loading,later-loading,uniform-loading and middle-loading.

Discovery of cryptoexplosive breccia in Nanjinshan gold deposit of Beishan area,Gansu Province and study of metallogenic regularity;

Exploration on metallogenic regularity of gold-antimony deposit in Mazhala,south Tibet;

Geological characteristics and metallogenic regularity of underground brine ore in coastal areas of Weifang,Shandong Province;

Gas reservoir type and reservoir-forming rule of Huagou gas field;

Based on the study of the reservoir-forming rule, it is considered that the degree, of prospecting is still very low.

Based on the analysis of exploration wells information,seismic data and typical reservoir,the development features of unconformity structure,action of the unconformity to reservoir forming,and reservoir-forming rules and fine description method of unconformity traps in Jiyang Depression were researched.