分离提取 提取和分离 提取分离
Separation extraction extraction and separation extraction
以上为机器翻译结果，长、整句建议使用 人工翻译 。
在炼油厂，从地下提取的原油被分离成天然气、汽油、煤油和各种其他类型的油。
At a refinery, the crude oil from underground is separated into natural gas, gasoline, kerosene, and various oils.
这提高了提取、分离和冶炼它们的难度。 为了冶炼稀土
That makes extracting, separating and refining them difficult.
因此，是一种很有前景的提取和分离目标产物的方法。
Therefore, it is a potential method for the extraction and purification of target products.
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