The particulates have more acidic pollutants with strong acidity and have the corrodibility to grottoes.
细粒子中有较多的污染物并比粗粒子,这些细粒子对石窟有侵蚀作用。
The particulates have more acidic pollutants with strong acidity and have the corrodibility to grottoes.
细粒子中有较多的污染物并比粗粒子,这些细粒子对石窟有侵蚀作用。
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