gas proportional counter

例句：

1. 1. The gas proportional counter is used to measure the flow rate of gases.
   气体比例计用于测量气体的流量。
2. 2. The gas proportional counter was installed in the factory's control room.
   气体比例计安装在工厂的控制室。
3. 3. The gas proportional counter is crucial for maintaining the accuracy of industrial processes.
   气体比例计对于保持工业过程的准确性至关重要。