sealing run
... 坡口焊groove welding 封底焊道sealing run 搭接焊lap welding ...
back bead
... 打底焊道(backing bead) 封底焊道(back bead) 熔透焊道(penetration bead) ...
sealing run / back weld
焊接技术常用术语英汉对照汇编 ... 焊趾weldtoe/toe 封底焊道sealingrun(aftermakingmainweld)/backweld 打底焊道backingweld(beforemakingmainweld)/backweld ...