This paper introduces a new type of the special bomb based on the principle of a piston,which has the functions of both the traditional bomb and the thrust stand to simultaneously measure the pyroshock parameters caused by the exploding of the initiating devices in spacecraft,such as pressure,acceleration and displacement.

A alike theorem on taking off of jumping events——hold one s body and eruption;

According to the condition of using each kind of exploders in China,based on the ordinary capacity type exploder,to perfect FB-100 pocket multi-functional exploder,the research group have developed FD-100Z numeral capacitor exploder which can check up blasting network resistance automatically by hard work.

The exploder is controlled by single chip processor PIC16C55 and can be used in explode old buildings and in mines.

In order to ensure the mine safety production and to prevent the coal dust and gas explosion accidents occurred by electric spark,the paper discussed how to eliminate the electric spark occurred from the mine underground illuminations,electric cable connec- tion,underground electric cable selection and mine exploders.

Experimental Study on In-wall Temperature Measurement of the Closed-bomb;

Based on the special sensor and multi-point measure, a new method is proposed using temperature extrapolation method to get the in-wall temperature of the closed-bomb.