英语翻译The experiences in Europe have demonstrated that biofiltration has economic and other advantages over existing APC technologies,particularly if applied to off-gas streams that contain only low concentration(typically less than 1000 ppm as

英语翻译
The experiences in Europe have demonstrated that biofiltration has economic and other advantages over existing APC technologies,particularly if applied to off-gas streams that contain only low concentration(typically less than 1000 ppm as methane) of air pollutants that are easily biodegraded.

在欧洲的经验表明生物过滤技术和现在使用的空气污染控制技术相比有经济方面和其他方面的很多优势.尤其是在对含有可生物降解且浓度较低的污染物（特别是1000ppm以下,如甲烷）的尾气处理中非常有效.