| 单词 | alum cake |
| 释义 | > as lemmasalum cake alum cake n. now historical impure aluminium sulphate, manufactured from china clay.The substance referred to in quot. 1836 may simply be alum. ΚΠ 1836 Fraser's Mag. Sept. 282 When we see a man call for a bottle of pale sherry, over which he is smacking his lips,..he little dreams, perhaps, of cherry-laurel water, gum besoin [sic], and alum-cake, which he is unconsciously swallowing. 1860 R. Hunt Ure's Dict. Arts (ed. 5) I. 118 Alum Cake.—This substance owes its value to the amount of sulphate of alumina it contains, and is in fact another means of making soluble alumina accessible. 1937 Thorpe's Dict. Appl. Chem. (ed. 4) I. 289/1 The product was marketed under the name of ‘alum cake’, and contains the whole of the silica, iron, and other impurities present in the clay. 2000 S. Garfield Mauve 110 The ingredients in stock included alumina, petroleum, acetic acid, alum cake, [etc.]. < as lemmas |
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