近三十年来,我国CO_2气体保护焊的应用发展很快,形势一派大好,但也还存在一些问题。革命导师列宁说得好:“庆祝伟大的革命纪念日内的最好办法,是把注意力集中在还没有解决的革命任务上。”我们从实践中深深地体会到,为了进一步推 In the past three decades, the application of CO 2 gas shielded welding in our country has been developing rapidly. The situation is fantastic but there are still some problems. Lenin, the revolutionary mentor, put it well: “The best way to celebrate the great Revolutionary Anniversary Day is to focus on the unresolved revolutionary task.” We deeply understand from practice that in order to push further