acid refined oil的用法和样例：
- Refined oil, the natural gas market supply stable.
- Notice regarding adjusting the price of refined oil.
- Linoleic acid was enriched by urea adduct method of the refined oil, resulting an increasing of linoleic acid methyl ester content from 78.39% of the crude oil to 93.75%.
- The article intruduce some method to prevent refined oil from deterioration and long for shelf-life such as nitrogen sparging,Chelation with citric acid and Prevent oil from light.