narrow gap one-side automatic welding
... normal weld正常焊接 narrow gap one-side automatic welding窄间隙单面自动电弧焊 narrow gap welding窄间隙焊接; 狭间隙焊 ...
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... 襟翼舵 napped rudder 窄缝单面自动电孤焊 narrow gap one-side automatic welding 窄缝焊法 narrow gap welding ...
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