waveguide shim

例句：

1. 1.The waveguide shims are used to adjust the height of the antenna.
   波导衬垫用于调整天线的高度。
2. 2. The engineers used the waveguide shims to fix the antenna in place.
   工程师们使用波导衬垫来固定天线。
3. 3.The waveguide shims were designed to prevent the antenna from moving during operation.
   波导衬垫被设计成在操作过程中防止天线移动。