The conclusion is drawn that the included angle of each branch of the blood vessel are equal by making a mathematical model of the vascular branches and analyzing the model from the view of optimization.

The mathematical expression of included angle between ray axis and optical axis is also given.

The test results show that the change of the included angle between the central axial lines of the branch and main pipes as well as the superficial gas velocity have a relatively big influence on the solid-phase flow distribution characteristics.

A Study on the Angle between the Ophthalmic Nerve and the Maxillary Nerve;

Diagramming Study of the Angle Between a Line and a Plane;

Effect of false twister angle on production stability of PET DTY;

the flat anchorage and taking a vast amount of experimental research as the basis,the article comprehensively analyzes and sums up the affecting factors on the static load anchorage performance of clamping piece type flat anchorage with deflection angle from many aspects,and puts forward that the experimental detection method is one of the key affecting factors.