sonic depth-finding instrument

例句：

1. 1.The sonic depth-finding instrument was used to detect the underground pipeline.
   声波探测仪器被用来探测地下管道。
2. 2.The sonic depth-finding instrument helped us locate the missing child.
   声波探测仪器帮助我们找到了失踪的孩子。
3. 3.The sonic depth-finding instrument is a valuable tool for inspecting the quality of materials.
   声波探测仪器是检查材料质量的一种宝贵工具。