DIN ISO 23139 E:2022 处理空气和其他气体的生物设备 污水处理厂除臭应用指南（ISO/DIS 23139:2022） 草案
Draft Document - Biological equipment for treating air and other gases - Application guidance for deodorization in wastewater treatment plants (ISO/DIS 23139:2022); Text in German and English