Considering factors of extraction efficiency, oil yield and environmental protection, the ultrasonic extraction and the supercritical carbon dioxide fluid extraction are the appropriate methods.
从提取效率、油的得率及绿色环保几个因素综合考虑，超声波提取法和超临界二氧化碳萃取法是比较理想的两种提取方法。
The principle of the increase efficiency baffle and its application in the oil fume extraction system of residential kitchen are introduced.
介绍了增效导流板的原理及在住宅厨房抽油烟系统中的应用。
By broking the wall of powdered oils with ultrasonic, the oil extraction efficiency yield was 65%, which met the need of determining POV.
超声波破壁法提油其提油率可达65%左右，可满足测定要求。
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