the distillation apparatus of fennel essential oil was studied, a set of distillation and extraction apparatus that operating simply and measuring accurately was made certion.
研究了茴香精油的蒸馏提取装置,确定了一套操作简单、测量準确的同时蒸馏萃取装置。
the ways to its purification are: 1. liquid fermentation method. high-purity alcohol produced by modern distillation apparatus is the prerequisite for purified liquor production.