This article introduced method of using computer aided to design pass of skew rolling rectangular pipe with unequal fillet,analyzed rolling requirements and difficulty because of width to height ratio is 3,put forward pass design scheme.

In the process of steel-making and rolling the chemical compositions and proper ties of the test samples of scalene angle steel are analyzed and the regression equation between the strength of the steel ( δ b, δ s) and carbon eq uation, i.

This papers introduces that a following research on the steelmaking and rolling processes of a ship scalene angle steel.

Two-way meridian lattice shell is the single-layer lattice shells structure made of two groups of intercrossed full-length scalene angle steel along the direction of the sphere lattice lines.

Based on the complex number triangle inequality the thesis arrives at a new inequality and an exceptional case of n= 2,also a verification under general situation is put forward in the thesis.

To those peers having no common partners,it uses triangle inequality to calculate their global average departure degree through their trust path built by other peers.

In this paper,we consider two new types of sorting problems-Minimum cost sorting problem with cost function satisfies triangle inequality and minimum cost sorting problem without cost function does not satisfy triangle inequality.

Strengthening of the weighted trigonometric inequality;

This paper combines with the concept of convex function, uses Jensen s inequality to make up trigonometric inequality of the kinds.