Draw ing inspiration from sand size curve in dynam icsofstream s, a new m ethod, fracture opening curve and roughness curve is given to describe opening size and roughness and their distribution in given case.

In this paper,the pattern parameters of roughness profile were analyzed.

A new model of thermal contact resistance based on the statistic characteristic of roughness profile is proposed in this paper.

Using wavelet transform, the roughness profiles are extracted.

Through analysis on measured data by standard prism open channel applying three-side concrete protection engineering, depth-roughness curve is plotted, based on which irrigation amount can be calculated, and analysis on calculation precision is also made.

Discussion on distribution curve of coal preparation management and its application;

Computer imitation on distribution curve modle of dry cleaning with air dense medium fluidized bed;

It is hard to evaluate correctly separation performance of gravity-based coal cleaning unit using characteristic parameters of special distribution curve.

Various methods of parallel moving for partition curve of gravity separation with different densities were discussed.

The equipment's separation density obtained by using partition curve method was 1.

Based on the results of the analysis, a mathematical model of the screen is established with piecewise function to describe completely the partition curve of the probability sizing.

Rapid 3D contour matching based on the Fourier transform;