pressure ratio detector

例句：

1. 1. The pressure ratio detector is used to monitor the level of gas in the pipeline system.
   压力比探测器用于监测管道系统中气体的水平。
2. 2. The engineer installed a pressure ratio detector at the valve to detect any leaks.
   工程师在阀门处安装了压力比探测器，以检测任何泄漏。
3. 3. The pressure ratio detector was used to ensure that the system was operating within safe limits.
   压力比探测器被用来确保系统运行在安全范围内。