a vessel, chamber, or (now esp.) artificial pool, made of or containing a layer of porous material and used to filter water.
| 单词 | θ61369 |
| 释义 | the world > physical sensation > cleanness and dirtiness > freedom from impurities > removal of impurities > filtering or percolating > [noun] > filter or percolator > for water (3) filtering basin1801 a vessel, chamber, or (now esp.) artificial pool, made of or containing a layer of porous material and used to filter water. sand-trapa1877 A device for separating sand and other impurities from a stream of water or pulp passing through it, esp. in the manufacture of paper. sand filter1894 a filter used in water purification consisting of layers of sand arranged with coarseness of texture increasing downwards. |
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