... backing welding打底焊 backing weld底焊; 底焊焊缝 backstep welding sequence分段退焊次序 ...
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... weld nugget焊点熔核 weld on bottom底焊 weld overlap重叠区 weld reinforcement 焊缝余高 ...
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... back ward welding反手焊接 back welding底焊; 退焊法 backhand welding逆向焊; 右焊法; 后焊法; 向后焊 ...
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... welding of tube-tubesheet管子与管板氩弧焊接 welding on bottom底焊 welding operation焊接操作 ...
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封底焊 back sealing weld ; back run welding ; back run ; backing-up
封底焊道 sealing run ; back bead ; sealing run / back weld
打底焊 backing weld
打底焊道 backing weld ; backing run ; backing weld / back weld ; backing bead
底焊焊缝 [机] backing weld
底焊焊道 backing pass
封底焊缝 backweld ; sealing weld ; [机] sealing bead ; backup weld
打底焊缝 priming weld seam
封底焊坡口 underside groove
介绍了梁底焊筋，混凝土浇注加固施工工艺。
Constructional technology of welding concrete steel under the beam and strengthening with concrete cast are introduced.
上模为中部开有锥形焊口的铜制模块，焊口位置与底模熔池对应。
The copper-made die block in which a conical welding opening is bored is arranged on the middle part of the upper die.
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