论文部分内容阅读
一、前言随着科学技术的发展,CO_2气体保护焊接技术越来越多地被各个工业部门所采用。为了使这种焊接方法更广泛地用于生产,我们经过反复试验与研究,成功地研
I. Introduction With the development of science and technology, CO 2 gas shielded welding technology is increasingly used in various industrial sectors. In order to make this welding method more widely used in the production, we have tried and researched repeatedly and successfully researched