焊道，金属焊接时,每一次熔敷所形成的一条单道焊缝。
封底焊道 sealing run ; back bead ; sealing run / back weld
打底焊道 backing weld ; backing run ; backing weld / back weld ; backing bead
密封焊道 seal weld ; pressure-tight weld ; Sealing Bead
焊道下裂纹 [机] underbead crack
填充焊道 filling bead ; fill bead ; filling pass ; filler pass
熔透焊道 penetration bead ; under bead ; uranamibead
底焊焊道 backing pass
熔敷焊道 [机] weld bead ; welding bead
焊道顺序 pass sequence ; bead sequence
随铬含量的增加焊道由光滑到不连续，焊接工艺性能变差。
Welding process get worse with an increase in chromium content and smooth bead turn to be discontinuous.
从酸蚀断面还可以看出：在原自动埋弧焊的上面覆盖有多层焊道。
The etched section also reveals that multiple weld passes were made over the top of the original submerged arc weld pass.
低成本的焊道，与其他焊接过程相比，填充金属的数量相对比较少。
The quantity of filler metal being often much lower than with other welding processes.
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