e和a是什么意思

The ethyl acetate extract of Typha latifolia inhibit the growth of some algae.

对香蒲类植物的花粉蒲黄中的'抑藻物质进行提取、分离、鉴定。

Conclusion Bidens ethyl acetate extract has a significant hypoglycemic activity.

结论鬼针草乙酸乙酯提取物有显著的降糖活性。

C. The quench is performed with aqueous sodium hydrogen carbonate and ethyl acetate.

三是演出的淬火、乙酸乙酯碳酸氢钠水溶液。

Juemingzi extracts were prepared with ethyl acetate, n-butanol and water respectively.

以决明子为原料，分别用乙酸乙酯、正丁醇和水制备粗提取物。

Ethyl acetate is an excellent solvent and extractant and is an important chemical material too.

乙酸乙酯是性能优良的溶剂、萃取剂和重要的化工原料。