When using sorbitic extractors, try to teach and explain packing method.

在使用取时，应作试教，讲解安装方法。

The paper analyses that flavone's total content measuring of Parthenocissus tricuspidate is extracted by scorbutic extractor and Cohobation method, measured by spectrophotometer.

采用取法和回流取法对爬山虎中总黄酮含量进行了取,并用光光度法进行了测定。