The common scattering point trace gather within the given offset is obtained by taking the dual quadratic surd travel time equation, the principle of prestack Kirchoff integral migration, and the number of scattering points.

Then, the ellipse evolving common reflection point (CRP) stack is brought in with innovation and distinction, which abandons conventional CMP gathering and NMO stack.

In this paper, it was mainly studied that how to realize the modularity general-purpose and miniaturization of launch control system which was based on common-frame launch.

This thesis combines with the pre-research requirements of a certain common-frame launch system, by means of multi-rigid-body dynamic theories and visual prototype technology, the research has been done on the initial designing of the common-frame launch system, launching characteristic simulation, the dynamic s.

This paper simulates the common base input characters,the common base output characters,the common emitter input characters,and the common emitter output characters of submicron pnpBJT in VLSIC with Matlab,concluding that it does not go all the way of common base input characters between the ideal pnpBJT and the real pnpBJT.

Cut off frequency is the main factor influencing frequency properties of electrode circuits of common emitter,common base and common collector.