Conclusions Ultrasonic extraction was a simple method, with high extraction efficiency.
结论超声提取方法简单，提取率高，低耗高效。
Those techniques were mainly focused on integration, fast and high extraction efficiency.
上述技术的研究重点集中于集成化、快速和高萃取率。
The packing has high extraction efficiency and low capacity, and is one ideal kind of liquid-liquid extracting packing.
该填料萃取效率高，容量低，是一种较为理想的液液萃取填料。
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