结果表明，用95%乙醇为萃取剂的提取效果较好。
The result shows that 95% of ethanol was the most effective in the extraction.
对用石油路线和乙醇路线生产EG的总生产成本进行了比较。
The total production cost was compared between the petroleum and alcohol route.
对用石油路线和乙醇路线生产EG的总生产成本进行了比较。
The total production cost was compared between the petroleum and alcohol route.
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