目的：旨在了解延长初发酵培养时间对各类样本大肠菌群检出结果的影响。
Objective: To know the effect resulted from prolonging of primary fermentation time on coliform bacteria among different categories of samples.
目的：旨在了解延长初发酵培养时间对各类样本大肠菌群检出结果的影响。
Objective: To know the effect resulted from prolonging of primary fermentation time on coliform bacteria among different categories of samples.
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