In order to study the water chiller/heater of air-source heat pump s performance parameters and characters under the single or double stage, a sample was designed and mounted, then through analyzing and comparing the experimental results, the water chiller/heater of air-resource heat pump’s performance characters and rules under different operation patterns were gained.

Through linear sandpack model and transparent micromodel experiment,this paper studies migration rules of weak gel in porous media and general characteristics of EOR.

Numerical simulation of the dust movement rule in fully-mechanized coal faces;

Numerical simulation analysis of the movement rules of projectile in soil;

The differential equations of three mass points are derived for different mass relations between them,and their analytic solutions are obtained,by which the movement rule of three mass points are discussed.

Exploration potential and migration-accumulation rules of natural gas in Junggar Basin;