Plastics . unplasticized polyvinyl chloride pipes for drinking water supply . extractability of cadmium and mercury occurring as impurities 塑料制品.饮用水供给用未增塑聚氯乙烯管件.作为杂质的镉和汞的可萃取性
Huge algae outbreaks again pose a threat to drinking water supply from taihu and chaohu , two of china " s major freshwater lakes 中国两大淡水湖太湖和巢湖再次爆发藻害。大面积的湖藻爆发,将要威胁饮用水的供应。
Local public services - guidelines for service activities relating to drinking water supply and sewerage - part 3 : management of waste water treatment 地区公共服务.饮用水供应和废水排放服务工作指南.第3部分:废水处理的管理
Local public services - guidelines for service activities relating to drinking water supply and sewerage - part 4 : management of drinking water system 地区公共服务.饮用水供应和废水排放服务工作指南.第4部分:饮用水系统的管理