differential vacuum gauge

例句：

1. 1.The differential vacuum gauge is used to measure the pressure difference between two points in a pipeline.
   差压真空计用于测量管道中两点之间的压力差。
2. 2. The engineer carefully adjusted the settings of the differential vacuum gauge to ensure accurate readings.
   工程师仔细调整了差压真空计的设置，以确保准确的读数。
3. 3. During the maintenance, the technician checked the differential vacuum gauge to detect any leaks in the system.
   在维护过程中，技术人员检查了差压真空计，以检测系统中的任何泄漏。