Calculation formula of velocity distribution, boundary layer thickness, friction force and loss of water head are given out, in accordance with the result from theory analysis of similitude solution.

There are four emphases in -research, for instance, flow state in pipeline, distribution of concentration and velocity, deposition-limit velocity and calculation of flow resistance or head loss.

Some aspects about electron imaging, such as the calibration of electron velocity and the calculation of angular and kinetic energy distribution are also discussed.