Steel angle is a general purpose pass, used in all kinds of steel structure, therefore its use scope is extremely widespread, and holds a greater proportion in the steel products production.
角钢是一种通用型钢，用于各种钢结构中，因此使用范围非常广泛，在钢材生产中占有较大的比重。
The general framework of this article is:the Introduction part give a describes about status quo, Purpose, method and scope of the study;
本文的大体框架为：引言部分介绍本文研究现状、目的、方法以及研究范围；
Chapter one is a brief introduction to the thesis, presenting a brief outline of the purpose, the scope and the general structure of the thesis.
第一章是对本文的一个简单介绍，包括论文讨论的范围，目的以及大致结构。
Chapter one is a brief introduction to the thesis, presenting a brief outline of the purpose, the scope and the general structure of the thesis.
第一章是对本文的一个简单介绍，包括论文讨论的范围，目的以及大致结构。
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