双语例句
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With these spectral methods, the chemical composition and the structure of the polishing paste for plastics were identified.
通过上述光谱法确定了该塑料抛光膏的化学组成和结构。
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Silica gel 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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Polishing with a gritty paste can remove stains on a tooth's surface.
用含有颗粒的抛光膏进行抛光能够清除牙齿表面污垢。
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