There are many methods for computation of the slope and deflection of beams such as the integration method, the finite difference method, the Macaulay′s method, the Mohr′s ‘area-moment’ methed and so on.

The paper discussed the change principle of high degree parabolic curvature and point out that the slope of point which curvature is largest have relation only to n-the degree of parabolic, while n→∞,the limited values are and 35.

Influence of Angle of Labyrinth Channels on Hydraulic Performance of Emitter

Analyzing plow chain's power with or without the effect of angle of the conveyor,studying three kinds of main resistances.

Researched AS-UII robot then gives a kind of method how to measure angle of robot indirectly.

3D finite elements method analysis on wharf structure and soil in the corner of No.2 croy of Tianjin Port;

The corner of the bottom ball is one of the important parameters restricting the deep water.

The corner acting as the node of elements,the researching of corner provides the new viewpoint to evaluate architecture,which establish the dialectic relationship between local and whole.

It points out further that line-strain is the function of rotation angle,and proves the conclusion that small deformation hypothesis requires small deformation and small rotation angle.

A measurement method based on image is present to measure rotation angle at high precision of 5″ which uses a line as the character sign.