E. coli and fecal streptococci are subsets of fecalcoliforms, 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。
2
The quality controlling equipment in lab, medium and accuracy test during the bacteriology experiment were analyzed, and then the key problems in the fecalcoliforms experiment were discussed.