Methods: Ethanol as solvent, using ultrasonic extraction method of total flavonoids in propolis extracted using ultraviolet-visible spectrophotometry of total flavonoids were determined.
方法：以乙醇为溶剂，采用超声提取的方法对蜂胶中的总黄酮进行提取，利用紫外-可见分光光度法对总黄酮的含量进行测定。
Abstract: in this study, the reflux extraction and ultrasonic extraction processes of total flavonoids from Podocarpus nagi leaves were optimized using orthogonal experiments.
摘要：本研究采用正交试验设计分别优选回流提取和超声波提取竹柏叶总黄酮的最佳工艺条件。
The ultrasonic echoes of welding flaws for three types of pressure vessel are analyzed for feature extraction of signal processing using higher-order spectrum method.
针对焊接缺陷超声检测中信号处理的特征提取问题，应用高阶谱方法对三类压力容器焊接缺陷的超声回波信号进行了分析。
The extraction and detection of F1-ATP synthase from pig-liver mitochondria are investegated by using ultrasonic and differential centrifugal methods.
采用超声和差速离心方法，研究了猪肝线粒体ATP合酶水溶性部分（F1-ATP合酶）的提取及检测方法。
Results Using ultrasonic wave extraction, the content of total flavone is the highest among four technological process.
结果用超声法测得的总黄酮含量最高。
Using the ultrasonic wave detector to probe the flexible range of the extraction tunnel, grasping the rule of deformed tunnel directs the supporting design of the tunnel bolt.
利用超声波探测仪探测回采巷道的松动范围，掌握巷道的变形破坏规律，以此指导巷道的锚杆支护设计。
Using distilled water as extraction agent, ginseng polysaccharides were extracted by method of ultrasonic wave from ginseng powder.
人参根磨粉后，以蒸馏水为提取剂，用超声波法提取人参根中人参多糖，采用苯酚-硫酸比色法测定多糖含量。
RESULTS & CONCLUSION: The extraction effects were different in using ultrasonic extractors with different power levels and ultrasonic frequency.
对同批样品进行反复测试结果与结论：不同功率、频率超声提取仪提取效果和对含量测定的结果不同。
Using ethanol solution as the extraction agent, green pigment was extracted from spinach with ultrasonic-isted extraction. The extraction process and stability of the green pigment were studied.
以菠菜为原料，以乙醇溶液为提取剂，研究了采用超声波辅助工艺提取菠菜中绿色素的方法及菠菜绿色素的稳定性。
Using ethanol solution as the extraction agent, green pigment was extracted from spinach with ultrasonic-isted extraction. The extraction process and stability of the green pigment were studied.
以菠菜为原料，以乙醇溶液为提取剂，研究了采用超声波辅助工艺提取菠菜中绿色素的方法及菠菜绿色素的稳定性。
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