| 单词 | membrane filter |
| 释义 | > as lemmasmembrane filter membrane filter n. a sheet or film of a polymer (originally collodion) that has pores of a uniform size, used esp. for ultrafiltration. ΘΚΠ the world > physical sensation > cleanness and dirtiness > freedom from impurities > removal of impurities > filtering or percolating > [noun] > filter or percolator > for fine particles microfilter1911 membrane filter1922 1922 H. Bassett in 4th Rep. Colloid Chem. (Brit. Assoc. Advancem. Sci.) 23 Ultrafiltration by means of colloidal membrane filters has been worked out as an analytical operation by Zsigmondy and co-workers. 1932 Science 28 Oct. 388/1 A membrane filter.., minus the membrane but retaining the perforated porcelain strainer, forms a receptacle. 1951 Jrnl. Amer. Water Works Assoc. 43 975/1 It appears reasonably certain that membrane filters have approached a degree of refinement that suggests their extended application. 1988 Q. N. Myrvik & R. S. Weiser Fund. Med. Bacteriol. & Mycol. (ed. 2) v. 76 Membrane filters, composed of biologically-inert cellulose esters having a uniform porosity, are now readily available. < as lemmas |
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