Aimed to rigid target made of concrete,the techniques of the kinetic energy projectile penetration into the target are studied by virtue of theorifical analysis and experimental research in this paper.

Discussion on a wrong conclusion gotten by theorem of kinetic energy for a system;

Study on the Photoelectric System of Measuring the Speed and Kinetic Energy of a Bullet;

application of kinetic energy theorem of mass point system;

At the centre of the section near the top of burners,its rising velocity is minimum,its turbulence kinetic energy is maximum,and its temperature is maximum too.

Then the result of turbulence kinetic energy of numerical simulation near the roof in the 90°　direction was present,which was used to analyse the rule of distribution of fluctuating wind pressure on the cantilever.

Calculation of the blast momentum in ironmaking;

The descriptions of the formula of blast momentum in some ironmaking literatures are reviewed.

The influence of blast kinetic energy on blast furnace smelting when high spouting pulverized coal was studied,and importance of blast kinetic energy to stable operation of blast furnace was pointed out,moreover the effect factors and control measures of blast kinetic energy were in detail analyzed in this paper.

The measurements such as improving the quality of raw material, optimizing the operation technique, increasing the blast temperature, selecting the adaptable blast kinetic energy and oxygen enrichment rate are taken to properly control of suitable coal gas distribution and raise the pulverized coal injection of No.

To reveal the frequency character of pressure fluctuation in reactor and what causes it, the wavelet transform is used to analyze the pressure fluctuation signals tested in Submerged Circulative Impinging Stream Reactor (SCISR), where the signals are extracted on different scales to calculate fluctuation energy and the distribution of pressure fluctuation in frequency domain is discussed.