Based on the intersection condition of discontinuities and window,the estimator of discontinuities mean trace length is deduced.

Research on shear deformation localization in high-strength steel during orthogonal cutting;

Milling tool normal rake angle optimization based on orthogonal cutting simulation;

This paper presents the experiences in programming about the editing of graphics andthe solving results of geometric intersection, such as the reflection rotation and translation ofgraphics, the most of ten used nine solving results about the geometric intersection during in-teractive drawing, It is also to explain the principle and methods with C routine in examples.

The intersectional and tangential calculations can be processed in entity groups automatically.

The intersection method is one of the basic approaches for locating earthquakes and is not only robust but also efficient.