The surface modification makes no obvious difference in depurated efficiency.
表面改性对净化效率没有明显影响；
The radiation by non-thermal plasma can accelerate formaldehyde thansform and make an increase of 29. 61% in depurated efficiency.
研究结果表明：低温等离子体辐射能促进甲醛净化，可使其净化效率提高29.61%；
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