This welding backing is used with all one-side processes. Especially for those which do not demand back bead cleaning.

本衬垫可用于各种单面焊接工艺的位置，特别适用于不一定要求封底焊道的场合。

youdao

It is necessary to extract molten pool geometrical parameters in real time or to extract back bead width off-line either in seam tracking or in penetration control.

不论熔透控制还是焊缝跟踪，都需要实时或离线提取焊接熔池正面或反面的几何参数。

youdao

You can imagine a bead with a wire going through it and the bead can only slide back and forth.

你可以想象一个有金属丝穿过的珠子而且这个珠子只能前后滑动。

youdao

So you can imagine a bead with a wire going through it and the bead can only slide back and forth.

你可以想象一个穿在绳子上的珠子,小珠只能前后滑动

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