three-decibel coupler

例句：

1. 1. The three-decibel coupler was designed to improve signal transmission efficiency.
   这个三分贝耦合器被设计用来提高信号传输效率。
2. 2.In the medical field, three-decibel couplers are commonly used for isolating noise from electronic devices.
   在医疗领域，三分贝耦合器常用于隔离电子设备产生的噪声。
3. 3. The engineers carefully tested the three-decibel coupler before installation to ensure its proper functioning.
   工程师们在安装之前仔细测试了这个三分贝耦合器，以确保其正常工作。