any of various powders used to increase the porosity of a filter cake and prevent it from blocking the filter.
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| 单词 | θ61372 |
| 释义 | the world > physical sensation > cleanness and dirtiness > freedom from impurities > removal of impurities > filtering or percolating > [noun] > filter aid (1) filter aid1914 any of various powders used to increase the porosity of a filter cake and prevent it from blocking the filter. |
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