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北京自来水硬度的测试与分布张玉英，王雅芬，李国生（北京农学院基础部北京１０２２０６）水是人们日常生活中必不可少的物质，它是维系生命的源泉。但长期饮用硬度过高的水，不仅仅会影响人体健康而且对当今已进入千家万户的加湿器、加热器、净化器、电热水瓶、蒸气电熨...
Testing and distribution of tap water hardness in Beijing ZHANG Yuying, WANG Yafen, LI Guosheng (Beijing Institute of Agriculture, Beijing 102206, China) Water is an essential material in people’s daily life. It is the source of life. However, drinking water with too high hardness for a long time will not only affect human health, but also affect humidifiers, heaters, purifiers, electric kettles, and steam electric irons that have entered millions of households today.