Energy-saving ethanol dehydration techniques to produce dehydrated alcohol mainly included four measures as azeotropy distillation, extraction distillation, absorptive process and membrane separation.

摘要节能型乙醇脱水制备无水乙醇的方法主要有4种：共沸法、萃法、附法分离法。

The macroreticular resin to adsorb leucomycin( LM) as the better method to replace the solvent extraction method was designed.

用大孔网状树脂附法代替溶媒萃法,分离纯化柱晶白霉素。

AimTo study the technical process to extract ginkgolic acids in the exotesta of Ginkgo Biloba L.

目的研究超声萃法萃银杏外种皮中白果酸的工艺过程。