Use sulphur acid treatment oil, but divided by some includes the sulphur compound, includes the nitrogen compound and colloid.
是用硫酸处理油品，可除去某些含硫化合物、含氮化合物和胶质。
Use sulphur acid treatment oil, but divided by some includes the sulphur compound, includes the nitrogen compound and colloid.
是用硫酸处理油品，可除去某些含硫化合物、含氮化合物和胶质。
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