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for subject
Metallurgy
containing
封缝
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all forms
Chinese
English
封口焊缝
caulking weld
封口焊缝
caulk weld
封底焊缝
back weld
封底焊缝
backing run
封底焊缝
backup weld
背面焊缝封底焊缝
back weld
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