non-magnetic shim

例句：

1. 1.The engineer used a non-magnetic shim to adjust the machine's position.
   工程师使用一个非磁性垫片来调整机器的位置。
2. 2. The non-magnetic shim is essential for preventing scratches on the surface of the glass.
   非磁性垫片对于防止玻璃表面被划伤至关重要。
3. 3.The technician carefully placed the non-magnetic shim between the two pieces of metal to ensure they fit together perfectly.
   技术员小心翼翼地将非磁性垫片放在两块金属之间，以确保它们能够完美地结合在一起。