We cann t underestimate the significance of the regularities of form of calligraphy for package design and must study these regularities to improve our package design.

This paper described roof coal distortion rules,and massed loose substance simulation test with caving agglomeration of different coal roof and different immediate roof influenced on coal caving ratio based on strata movement.

The spot observation research on the surrounding-rock deformation laws of roadway in fully-mechanized sub-level caving mining face;

Study on the deformation law of calcirudite rock mass with a single fracture;

Experimental research on deformation law of soil under blast-en largement loads;

Computer simulation on the movement and deformation rules of three-roll planetary rolling process of Copper tube;

The deformation rules of 45# steel ring piece with outer step is studied through the analysis of plastic theory,numerical calculation of ABAQUS plastic FEM and simulating rolling experiment of 1:4 lead sample.

Based on the deformation data,the deformation rule of wall ro.