• 1. backing weld: 打底焊 | 底焊焊缝 | 打底焊道 | 垫板焊
• 2. weld backing: 焊接衬垫 | 焊缝衬垫 | 焊缝垫 | 焊缝背衬垫
• 3. backing groove of weld: 焊缝反面坡口

更多释义

• 1.Basic flux-cored wire for backing weld to T91 tube was studied in this paper.
  研究了用于T91钢管打底焊的碱性渣系药芯焊丝。
  dict.yoduao.com
• 2.Welding methods and technology of narrow gap quirk backing weld were discussed. Indirect quirk backing weld using manual hydrogen arc welding is considered as the best result.
  讨论了窄间隙深槽打底焊焊接方法和工艺，认为用手工氩弧焊进行单面深槽打底焊效果最好。
  dict.yoduao.com
• 3.They cause all the welding of double tubes, joint boxes and gas-collecting tubes to realize the backing weld of TAW-P. The quality of the double tube waste heat boilers have been improved.
  并对喷嘴、规范参数、坡口形式等作了相应改进，使双套管、联箱、集气管的焊接全部实现了钨极氩弧焊打底，从而提高了双套管废热锅炉的质量。
  dict.yoduao.com

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