Object: The naphtha was extracted from the flowers of Paulownia tomentosa (Thunb) Steud.
目的从毛泡桐花中提取挥发油。
Objective:To optimize the ultrasonic extraction for ursolic acid from Paulownia tomentosa(Thunb.
目的：确定毛泡桐中乌索酸的最佳超声提取工艺条件。
Objective:To optimize the ultrasonic extraction for ursolic acid from Paulownia tomentosa(Thunb.
目的：确定毛泡桐中乌索酸的最佳超声提取工艺条件。
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