multi-pass multiple pass welding

例句：

1. 1. The multi-pass welding process is used to join metal parts together.
   多道焊接过程用于将金属部件连接在一起。
2. 2. In the construction industry, multi-pass welding is a common method for joining steel structures.
   在建筑业中，多道焊接是连接钢结构的常见方法。
3. 3. The quality of the welding depends on the skill and experience of the welder.
   焊接的质量取决于焊工的技能和经验。