| 释义 |
▪ I. leaching, vbl. n.1
see leach v.1
▪ II. leaching, vbl. n.2|ˈliːtʃɪŋ|
[f. leach v.2 + -ing1.]
The action of the vb. leach2. Also leaching out.
a900Kent. Gloss. in Wr.-Wülcker 56/16 Et inrigatio, and leccinc. 1877Raymond Statist. Mines & Mining 323 The percentage of copper..renders the ore unfit for amalgamation without previous leaching. 1906E. W. Hilgard Soils ii. 24 A heavy depletion of the land by the leaching-out of this important plant food. 1938R. W. Lawson tr. Hevesy & Paneth's Man. Radioactivity (ed. 2) xxv. 265 In some minerals the ratio of lead to uranium has been altered by leaching-out processes in the course of the long periods of time involved. 1943Millar & Turk Fund. Soil Sci. xv. 377 The leaching out of the alkali tends to leave the soil in an even worse physical condition. 1966G. H. Dury Ess. Geomorphol. 56 It is the simple process of leaching out of contained salt, by groundwater, which rapidly reduces the shearing strength of the deposits.
attrib.1850H. Cutts Address Windsor Co. Agric. Soc. (U.S.) 12 In China..every thing is subjected to the leaching process, and in the form of liquid decoctions only, applied to the land. 1877Raymond Statist. Mines & Mining 399 The bath may be brought in contact with the ore..by percolation in leaching-tanks. 1884Harper's Mag. Apr. 761/1 This subsoil water, after acting as a leeching agent of a surface, filled..with..refuse, is scarcely less foul than sewage. |