differential manometer

例句：

1. 1. The differential manometer is used to measure the pressure difference between two points on a pipeline.
   差压计用于测量管道上两点之间的压力差。
2. 2.The engineer used the differential manometer to check the accuracy of the pressure measurement.
   工程师使用差压计检查压力测量的准确性。
3. 3.The differential manometer was used to detect any leaks in the pipeline system.
   差压计被用来检测管道系统中的任何泄漏。