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

摘要节能型脱水制备无水方法主要有4种：共沸精馏法、萃取精馏法、附法和膜分离法。

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溶媒萃取法,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.

目研究超声萃取法萃取银杏外种皮中白果酸工艺过程。