| 释义 |
filtering, vbl. n.|ˈfɪltərɪŋ|
[f. filter v. + -ing1.]
1. The action of the verb filter.
1830M. Donovan Dom. Econ. I. 191 The filtering of this rain through the ground. 1845J. Wilkinson Patent No. 10,984 The whole process of filtering is effected by pressure.
fig.1876Geo. Eliot Dan. Der. III. xlii. 235 There's been a good filtering of our blood into high families.
2. attrib. and Comb., as filtering-apparatus, filtering-bag, filtering-box, filtering-funnel, filtering-material, filtering-medium, filtering-paper, filtering-stand, filtering-vessel; also filtering-basin (see quot. 1874); filtering-cup, a cup of porous wood used to illustrate the pressure of the atmosphere; filtering-press = filter-press; filtering-stone, any porous stone through which water is filtered; filtering-tank = filtering-basin (Knight).
1845J. Wilkinson Patent No. 10,984 Which [a cistern] must be considerably above the level of the *filtering apparatus.
1874Knight Dict. Mech. I. 846/2 *Filtering-basin, the chamber in which the water from the reservoir of waterworks is received and filtered previous to entering the mains.
1792G. Cowen Patent No. 1920 A quantity of sand, or any other *filtering material.
1791J. Peacock Patent No. 1844 The ascent of the fluid through the *filtering medium.
1757Lewis in Phil. Trans. L. 163 The colourless sorts of *filtering-paper are preferable for this use to the coloured. 1876Harley Mat. Med. 311 Filtering Paper is an almost pure form of cellulin.
1874Knight Dict. Mech. I. 846/2 *Filtering-press, a press in which the passage of a liquid through a body of filtering material is expedited by pressure applied thereto; a pressure-filter.
1827Faraday Chem. Manip. i. 17 The *filtering stands are of this kind.
1812J. Smyth Pract. Customs (1821) 234 *Filtering Stones,—Duty—for every {pstlg}100 value.
1811J. Ashley Patent No. 3472 An improved *filtering vessel for purifying..water. |