molecular sieves是什么意思

用法例句

The zoospores of Phytophthora sojae inoculated artificially in the soil are gathered with molecular sieves, while inoculating to measure to 104, 103, 102, 101 and 100 as a result, enrich to gather percentage respectively for 45.

采用套筛富集人工接种于土壤中的大豆疫霉卵孢子。