X80钢管道全位置机动焊工艺可行性研究
高云强
Feasibility Study of X80 Steel All-position Motorized Welding Process
Gao Yunqiang
石油化工设备技术 . 2021, (4): 56 -61 .  DOI: 10.3969/j.issn.1006-8805.2021.04.013