In the present paper, theoretical interpretations are developed which explore the criteria for safe storage of explosive masses with the situation in which a number of centres of reaction are embedded in an inert，but not perfectly conducting, matrix. The simplest case is that in which the temperature of the matrix is uniform，but temperature distributions within the reactive zones are also considered. Finally applications which model propellant systems are discussed.
In tills paper,a differential equation of vibration is formulated by using Lagrange’s equation for vehicles with 3-dimensional，n-axle，hydropneumatic suspension. The vehicle wheels and suspension components are connected with the body by balance arme. When the vehicle vibrates, the ratio coefficients of the characteristics of components in fixed position and the corresponding characteristics of suspension are a function of generalized coordinates. Relations between these ratio coefficients and the generalized coordinates are derived in order to make the mathematical models close to the real situation. The response computation programme is designed on the basis of the dynamic simulation for a 5-axle tracked vehicle. Part of the computation results and analysis of the harmonic and actually-measured road stimulations are given。
This paper describes the synthesis of three compounds： 5-methylami- no-2，4一dinitro azidobenzene ( I )，5-methyl nitro-amino -2，4，6- trinitro azidobenzene (II) and title compound(III). The 1H NMR of (I) and (III) shows that a pair of steric isomerides exist respectively . Some properties of (III) are also reported.
A new energetics compound 2，3，5，6-tetranitrato-l, 4-dinitropiperazine (TN)is synthesized and its properties are determined. The method for preparing intermediate disodium 2，3，5，6-tetrahydroxy-piperazlne-l, 4-disul- phonate (SP) and 2，5-diacetoxy-3, 6-dinitrato-1，4-dinitropiperazine (DN) for TN has been improved.
