low paper indicator

例句：

1. 1. The low paper indicator is used to measure the flow rate of liquids.
   低纸指示器用于测量液体的流速。
2. 2. The low paper indicator is an important tool for monitoring industrial processes.
   低纸指示器是监测工业过程的重要工具。
3. 3. The low paper indicator can be used to detect leaks in pipelines and other equipment.
   低纸指示器可以用来检测管道和其他设备的泄漏。