a filter for separating out small quantities of material or very fine particles.
| 单词 | θ61366 |
| 释义 | the world > physical sensation > cleanness and dirtiness > freedom from impurities > removal of impurities > filtering or percolating > [noun] > filter or percolator > for fine particles (2) microfilter1911 a filter for separating out small quantities of material or very fine particles. membrane filter1922 a sheet or film of a polymer (originally collodion) that has pores of a uniform size, used esp. for ultrafiltration. |
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