Firstly, the operating theory about several kinds of popular air purification technology is introduced in this paper. It also studied the advantages and disadvantages of these function in practical application. Secondly, it puts the emphasis on the new direction of air cleaning technology, and states the basic theory of water-washing air. Finally, the development trends of purification technology are discussed and summarized.%首先，介绍目前市场上流行的若干种空气净化技术工作原理，分析这些净化技术在实际应用中的优缺点。其次，重点阐述空气净化技术的新方向———“水洗空气”的基本原理，最后对净化技术发展趋势进行展望和总结。
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