By using the transfer matrix of the beam propagation,the movement of the low-order nonlinear ghost images was calculated when high-power Gaussian laser beam passes through the single convexo-convex lens,the single concavo-concave lens and the 4F system and then the movable rules were analyzed.

Design of platform trailer with good following performance;

Analyses of following behaviors as tracer particle by PIV in chamber of internal combustion engine;