mild steel welding rod

例句：

1. 1.This mild steel welding rod is suitable for welding small metal parts together.
   这种软钢焊接棒适合焊接小型金属部件。
2. 2. The engineer used this mild steel welding rod to repair the damaged pipe.
   工程师用这种软钢焊接棒修复了损坏的管道。
3. 3.The welding rod was made of mild steel, which makes it easy to handle and bend.
   焊接棒是由软钢制成的，这使得它易于处理和弯曲。