本试验对树叶中提取精油萃取液进行了研究，通过三种不同试剂萃取，对水蒸汽蒸馏产物所得的萃取率来研究其适合度。

The test is a research on the extraction of distilling essential oil from leaves by comparing efficiency of extraction by three reagents. Those are ether, ethyl acetate and ether from Petroleum.

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我们有公共设施用来种植玉米萃取植物，玉米萃取乙醇已经取得了正收益，而且相对应的谷物蒸馏器也是一种非常有价值的副产物。

We have the infrastructure for corn-ethanol plants in place, corn ethanol has benefits, and distillers' grains are a valuable feed coproduct.

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在早期的工作中，产物是靠蒸馏分离。

In the early work, separation of the products depended on distillation.

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