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beiwei5du 发表于 2017-8-4 15:54 ASTM International. F838-05 Standard Test Method for Determining Bacterial Retention of Membrane Fil ...
cnosema 发表于 2017-8-5 05:51 呃,自己下载 https://www.astm.org/DATABASE.CART/HISTORICAL/F838-05.htm
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