gas purifying

例句：

1. 1. The process of gas purifying is crucial for maintaining indoor air quality.
   气体净化过程对于保持室内空气质量至关重要。
2. 2.The company uses advanced technology to purify the gas before it is released into the environment.
   该公司使用先进技术在释放到环境中之前净化气体。
3. 3.Gas purifying systems are commonly used in industrial settings to remove harmful pollutants from exhaust gases.
   在工业环境中，气体净化系统常用于从废气中去除有害污染物。