E. coli and fecal streptococci are subsets of fecal coliforms, which are a subset of the total coliforms.

大肠埃希氏菌或链球菌是粪大肠菌群的一种，而粪大肠菌群是总大肠菌群的一种。

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E. coli and fecal streptococci are subsets of fecal coliforms, which are a subset of the total coliforms.

大肠埃希氏菌或链球菌是粪大肠菌群的一种，而粪大肠菌群是总大肠菌群的一种。

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