Draft Document - Small wastewater treatment systems for up to 50 PT - Part 3: Packaged and/or site assembled domestic wastewater treatment plants; German and English version prEN 12566-3:2018
文件草案——50 PT以下的小型废水处理系统——第3部分:成套和/或现场组装的生活污水处理厂;德语和英语版本prEN 12566-3:2018