switch expansion joint

例句：

1. 1. The switch expansion joint was designed to allow for easy adjustment of the angle between the two pieces of equipment.
   这个转换接头设计用来方便地调整两台设备之间的夹角。
2. 2.During installation, it is important to ensure that the switch expansion joint is securely fastened and does not come loose during operation.
   在安装过程中，确保开关膨胀接头牢固固定且在操作过程中不会松动是很重要的。
3. 3. The engineers carefully checked the switch expansion joint to make sure it was functioning properly before startingthe project.
   工程师们仔细检查了开关膨胀接头，以确保它正常工作后才开始项目。