XPT, as it is called, is a roughly 2cm-thick sheet of silica particles glued together with a strong, heat-resistant resin.
因为被称为XPT材料，是一个大约2厘厚米的二氧化硅粒子的薄板，与强大的耐热树脂粘在一起。
Method: Systematic solvent method is used to extract and silica gel dry column sheet gradation was used to separate the chemical composition.
方法：采用系统溶剂法提取，硅胶干柱层析法进行化学成分分离。
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