Summarizing and analyzing the effect on the pump function of geometry parameter of diversion shell, putting forward the limits of geometry parameter,it well supply a refernce for the design of diversion shell and be helpful to enhance pump function.

The electric field distribution of the system consisting a uniformly charged ring and a conducting sphere;

A simplified method of proving the independence of the internal and external electric field of a conductor shell is introduced.

In this paper,the research achievement of crustal fluid in the program (KTB) and some problems related to the fluid studies are briefly introduced.

The crustal fluids play an important part in geological processes of orogenesis, metamorphism, diagenesis and mineralization during dissolution and migration of fluids in host rocks where it can transfer and exchange material as well as transmit and deliver energy.