The two-filter method is chosen as the experimental method to detect radon concentrations by a FT-648 radon counter.
本文建立了氡浓度测量的双滤膜实验方法，使用FT - 648测氡仪实施氡测量。
Methods the amount of bacterium contamination and pathogenic bacteria of the used disinfectant was monitored reverse medium method with closed filter-counter-culture dish.
方法用封闭式薄膜计数培养器反注培养基法对临床使用中的消毒剂染菌量及致病菌进行监测。
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