The effect of factors such as converter device, raw material, air imbibed quantity, recovery restricted condition, and intensity of oxygen blowing on converter gas recovery ratio was studied, especially the effect of the air imbibed quantity.

Many experiments show that noises from environment are related to receiving conditions such as coupling between geophone and surface,numbers of geophone,element spacing and so on.

Because of the landform from hill becoming to mountain in Langzhong of Sichuan, the shooting and receiving condition of the near-surface become very complex.

Based on technological characteristics of the 3D seismic prospecting in mountainous areas,purposely analyzed conventional 3D seismic shot and receiving conditions,seismic data processing,put forward corresponding technological schemes and operating measures.

SOPCA conditional access system design and appplication;

A Research on the Application of Smart Card in DTV Conditional Access System;

Principle Research and Project Implementation of DTV Conditional Access System;

Combining the statistic analysis on the site data of Xinjiang topic,it also puts forward the convergence condition of individual sample size about data among the road quota based on the theory of student distribution in tables and graphs and offers the corresponding sug.

Based on the convergence condition of the closed loop ILC,the article also proposes the method of designing ILC.

The convergence condition of this interactive method is discussed in detail in this paper.