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.

• 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。