Silicagel column chromatography and solvent extraction were used to separate grease and abradant in a kind of excellent polishing paste for plastics, respectively.
分别采用硅胶柱色谱法和溶剂抽提,分离优质塑料抛光膏中的油脂和磨料部分。
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When pressure meters are used in such circumstances, lubricating grease glycerin or silicagel oil cannot be filled inside. Please contact with manufacturer for proper in-filled oil.