RESULTS & CONCLUSION:The ethanol refluxing process is better than the ethanol ultrasonicprocess in the extraction of icariin.
结果与结论：乙醇回流法对淫羊藿苷的提取效果优于乙醇超声法；
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Subject for carbide wire drawing dies, it analyses the problems related to ultrasonic machining equipment, investigates ultrasonicprocess and introduces the production and test of dies.
The researchers used water and an ultrasonic extraction process, followed by gas chromatography-mass spectrometry to quantify the amount of cocaine in more than 230 bills collected in 17 cities.