通过上述光谱法确定了该塑料抛光膏的化学组成和结构。
With these spectral methods, the chemical composition and the structure of the polishing paste for plastics were identified.
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。
Silica gel column chromatography and solvent extraction were used to separate grease and abradant in a kind of excellent polishing paste for plastics, respectively.
简述塑料模具钢抛光性能的重要性，并分析了影响塑料模具钢抛光性能的几个重要因素。
The importance of plastic mold steel polishing performance is briefly stated, and some important factors affecting plastic mold steel polishing performance are analyzed.
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