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。
At the same time, the construct of automatic test system and the primary test effect are all introduced.
同时简述了计算机化直流局部放电检测系统构造及其初步测试效果。
At the same time, the construct of automatic test system and the primary test effect are all introduced.
同时简述了计算机化直流局部放电检测系统构造及其初步测试效果。
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