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welding procedure
welding process
welding rectifier
welding rectifier power source
welding regulator
welding residual stress
welding robot
welding rod
welding rod core
welding rod extrusion press
welding rod metal
welding schedule
welding science
welding screen
welding seam
welding sequence
welding set
welding shop
welding slag
welding sleeves
welding socket
welding source
welding spats
welding spatter
welding speed
welding spot
welding station
welding stick
welding stress
welding symbol
welding process
welding rectifier
welding rectifier power source
welding regulator
welding residual stress
welding robot
welding rod
welding rod core
welding rod extrusion press
welding rod metal
welding schedule
welding science
welding screen
welding seam
welding sequence
welding set
welding shop
welding slag
welding sleeves
welding socket
welding source
welding spats
welding spatter
welding speed
welding spot
welding station
welding stick
welding stress
welding symbol
welding procedure
焊接工艺, 焊接程序