| 摘要 |
Molten ceramic grains are intended, for example, for applications involving abrading tools, having the following average chemical weight composition, expressed in weight percent based on oxide content: Al<SUB>2</SUB>O<SUB>3</SUB>: 93% to 97.5%; MgO: 2.2 to 6.5%; SiO<SUB>2</SUB>: <0.1%; other impurities: <0.4%.
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