k90
k90-
In this study , the survival situation of enteropathogenic Escherichia coli EPEC O114 : K90 in different milk-based products stored at different temperatures was explored .
探讨肠致病性大肠杆菌EPECO114：K90在不同温度和乳基质环境中的存活情况。
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A novel solution containing high-molecular PVP ( K90 ) and DAS , which together function as the photoresist , and low-molecular PVP ( K30 ), which serves to stabilise the palladium , is studied in this paper .
介绍了一种新型的紫外光刻体系，它由包含低分子量PVP（K30）作为稳定剂的钯胶和用作光刻胶的高分子量PVP（K90）/DAS组成。