| 单词 | alum |
| 释义 | alum [`al·ǝm] INORGANIC CHEMISTRY 1. Any of a group of double sulfates of trivalent metals such as aluminum, chromium, or iron and a univalent metal such as potassium or sodium. 2. See <<aluminum sulfate>>, <<ammonium aluminum sulfate>>, <<potassium aluminum sulfate>> MINERALOGY KAl(SO4)2·12H2O A colorless, white, astringent-tasting evaporite mineral. |
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