sonic spark locator

例句：

1. 1. The sonic spark locator is used to locate underground pipelines.
   声波火花定位器用于定位地下管道。
2. 2. The engineer used the sonic spark locator to identify the fault in the power grid.
   工程师使用声波火花定位器来识别电网中的故障。
3. 3. The sonic spark locator was crucial in locating the damaged transformer.
   声波火花定位器在定位损坏的变压器中至关重要。