二次供水是高层建筑供水的主要方式，其水质将影响到居民的饮水卫生及身体健康。本文利用灰色关联分析对某市１９９１～１９９５年二次供水水质监测资料［１］（见表１）进行分析，以探讨二次供水水质评价方法。表１某市二次供水相关指标超标率资料超标率（％）标化值１９... Secondary water supply is the main form of water supply for high-rise buildings, and its water quality will affect residents’ drinking water hygiene and physical health. In this paper, gray correlation analysis was used to analyze the water quality monitoring data of secondary water supply in a city from 1991 to 1995 [1] (see Table 1) to discuss the secondary water quality evaluation method. Table 1 secondary cities in a city water supply exceeded the standard rate of information exceeding the standard rate (%) standardized value of 19 ...