extractors

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

在使用沙氏提取器时，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.

采用索氏提取法和回流提取法对爬山虎行了提取,并用分光光度法行了测定。