根焊
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stt semiautomatic root welding 半自动stt根焊
RMD root welding RMD根焊
STT root welding STT根焊
root welding layer 根焊层
root welding procedure 根焊工艺
root welding technology 根焊技术
argon arc root welding 氩弧焊打底
manual arc root welding 手工电弧焊打底
semi-automatic root welding 半自动根焊
·2,447,543篇论文数据，部分数据来源于NoteExpress
The welded joint was completed by root welding, filling welding and cover welding, their welding parameters were obtained from the experimental analysis.
整个焊接接头要通过根焊、填充焊和盖面焊来完成，通过试验分析得到各焊道所对应的焊接工艺参数。
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