这个词是什么意思？
Any of the numerous types of clay which contain varying proportions of Al2O3 and SiO2. They are made synthetically by heating aluminum fluoride at 1000-2000 degrees C with silica and water vapor. (From Hawley's Condensed Chemical Dictionary, 11th ed)
中文名称索引；定义为 MeSH 英文原文，尚未逐条译审。MESH:D000538 · MeSH 2026。
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