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20Mn2管材光纤激光焊接焊缝接头组织与性能
李彦良,何力佳
The microstructure and mechanical property of 20Mn2 pipe by fiber laser welding
LI Yan- liang,HE Li- jia
. 2016, (2): 35 -39 .  DOI: 10.13228/j.boyuan.issn1005-8192.2015083