welding bellows

例句：

1. 1.The welding bellows areessential for the assembly process.
   焊接风箱对于组装过程至关重要。
2. 2. The engineer used aspecial tool to remove the weldingbellows.
   工程师使用一种特殊的工具来移除焊接风箱。
3. 3. The weldingbellows were designed to improve theefficiency of the welding process.
   焊接风箱的设计旨在提高焊接过程的效率。