求翻译：作为制备氧化铝的前驱物，铝醇盐的纯度直接影响到氧化铝的纯度。据有关资料介绍，吸附蒸馏法和添加剂蒸馏法对铝醇盐中铁和硅的去除有很好的效果。本实验用这两种方法验证对铝醇盐中痕量杂质纯化的效果。是什么意思？

As precursors for the preparation of alumina, the purity of the aluminum alkoxide directly affect the purity of the alumina. According to the information, adsorption distillation and additives distillation for removal of iron and silicon in the aluminum alkoxide have a good effect. In this study, th

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Preparation of alumina as a precursor, purity of aluminum-alkoxides directly affect the purity of aluminium oxide. According to the relevant materials, the adsorption-distillation distillation and additives on removal of iron and aluminium alkoxides of silicon with very good results. This experiment

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