hot cathode ioization gauge

例句：

1. 1.This hot cathode ioization gauge is used to measure the concentration of gases in the air.
   这个热阴极电离计用于测量空气中气体的浓度。
2. 2.The hot cathode ioization gauge was used to detect the presence of pollutants in the water.
   热阴极电离计被用来检测水中污染物的存在。
3. 3.The hot cathode ioization gauge is a crucial tool for environmental monitoring.
   热阴极电离计是环境监测中不可或缺的工具。