英语词汇“filtering stone”的英英意思、用法、释义、翻译、读音、例句、短语、词组-英语词典

filtering stone n. a porous stone used to filter water; any of various types of stone used for this purpose.

ΘΚΠ

the world > physical sensation > cleanness and dirtiness > freedom from impurities > removal of impurities > filtering or percolating > [noun] > filter or percolator > stone

filtering stone1745

dripstone1792

1745 New Gen. Coll. Voy. & Trav. I. 555/2 In Laguna, where the Water is not clear, they depurate by filtering Stones.

1821 J. Smyth Pract. of Customs (ed. 2) ii. 234 Filtering Stones,—Duty—for every £100 value.

1864 J. C. Brough & A. J. Cooley Cycl. Pract. Receipts (ed. 4) 640/1 For filtering water on the small scale,..diaphragms of porous earthenware and filtering-stone, and layers of sand and charcoal, &c.,..are commonly employed.

1958 Sci. News Let. 2 Aug. 68/3 Snails are believed to keep spaces between filtering stones open and reduce the chance of clogging.

2005 National Business Rev. (N.Z.) (Nexis) 23 Sept. 52 A hearing before independent commissioners..will determine if the airport can continue to channel waste water into sumps in the ground that are surrounded by filtering stones and sand.

单词	filtering stone
释义	> as lemmas filtering stone filtering stone n. a porous stone used to filter water; any of various types of stone used for this purpose. ΘΚΠ the world > physical sensation > cleanness and dirtiness > freedom from impurities > removal of impurities > filtering or percolating > [noun] > filter or percolator > stone filtering stone1745 dripstone1792 1745 New Gen. Coll. Voy. & Trav. I. 555/2 In Laguna, where the Water is not clear, they depurate by filtering Stones. 1821 J. Smyth Pract. of Customs (ed. 2) ii. 234 Filtering Stones,—Duty—for every £100 value. 1864 J. C. Brough & A. J. Cooley Cycl. Pract. Receipts (ed. 4) 640/1 For filtering water on the small scale,..diaphragms of porous earthenware and filtering-stone, and layers of sand and charcoal, &c.,..are commonly employed. 1958 Sci. News Let. 2 Aug. 68/3 Snails are believed to keep spaces between filtering stones open and reduce the chance of clogging. 2005 National Business Rev. (N.Z.) (Nexis) 23 Sept. 52 A hearing before independent commissioners..will determine if the airport can continue to channel waste water into sumps in the ground that are surrounded by filtering stones and sand. extracted from filteringn. < as lemmas
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