According to the effect of the technological parameter of the surface of abraser waterjet polish part on machining aim,concerning its machining time,target distance,jet pressure,jet rake,abraser grain size,abraser density and flow quantity,related experiments are conducted in this paper by means of orthog-onal experiment.

Based on the laser energy density of the target, a lot of analysis in this paper show that it is unnecessary for laser weapons to use adaptive optics system when the target distance is less than a certain value.

The influences of cutting fluid,including pouring position,target distance,flux and velocity of flow on machining and its change rules are revealed systematically,and a new approach of les.

In this article,a semi-empirical parametric model of high-pressured water-jet cutting depth with water-cement ratio,stand-off distance,treating times was established,using multiple nonlinear regression analysis of experimental results.

The influence of the working parameters such as stand-off distance, jet pressure,submerged depth, exposure time on the submerged cavitating jet is also con-sidered.

To solve the problems that the machining of 5-axis abrasive waterjets,put forward the methods of controlling stand-off distance and changing tube length by compensating tool length.

The Method of Approaching Eye of Target and Its Application in Evaluating Highway Network;

According to the degree of approaching to eye of target,we can get an ordering preference of program.

The maximum value of incidence function for single index is used to be the eye of target.

A research work to miss distance of missile under infrared decoy influence is done.