back of weld

例句：

1. 1. The engineer carefully removed the back ofthe weld to inspect the integrity ofthe joint.
   工程师小心翼翼地拆除了焊缝的背面，以检查接头的完整性。
2. 2. The carpenter used a chisel to removethe back of the weld for betteraccess.
   木匠用凿子去除焊缝的背面，以便更好地进行操作。
3. 3. During the installationprocess, it's important to ensurethat the back of the weld isproperly secured to prevent movement during use.
   在安装过程中，确保焊缝背面得到妥善固定，以防在使用过程中发生移动。