大学英语词汇短语释义解析及例句 back bead


释义：

back bead 背面焊道（缝）；封底焊道

例句：



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。



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。