英语语法分析

This operation is called refluxing.

此操作称为打回流。

Objective: To investigate the diagnosis and treatment of refluxing cholangitis.

目的探讨反流性胆管炎的诊断和治疗方法。

We also find that the content of flavonoids was not same in extract prepared by alcohol under refluxing.

并发现用乙醇加热回流提取制备的浸膏，黄酮含量不稳定。