九江职业技术学院 船舶焊接 张庆红 57讲
1讲 焊条电弧焊第
2讲 二氧化碳气体保护焊第
3讲 埋弧自动焊第
4讲 钨极氩弧焊
视频观看网址:
https://ke.qq.com/course/348165?taid=2766796457594885
To view this video please enable JavaScript, and consider upgrading to a web browser that supports HTML5 video