方法利用反相层析的方法进行分离纯化，根据化合物的化学性质与光谱数据鉴定其结构。
Methods to isolate the constituents by reverse phase chromatography, and characterize their structures by the analysis of chemical property and spectral data.
方法利用正相、反相硅胶柱和大孔树脂柱色谱分离，并通过波谱技术进行结构鉴定。
Methods The compounds were isolated by silica gel, ODS, and macroporous resin column chromatography and their structures were determined by means of spectral analysis.
方法采用硅胶和反相硅胶RP- 18柱色谱分离，运用有机波谱分析确定化合物结构。
Methods Three compounds were isolated by a combination of RP-18and silica gel column chromatographies, and their structures were identified by spectral methods.
提出了一种不同阈值电压反相器控制的传输门组合结构。
A combinational structure of the transmission gate in the inverter control with different threshold voltages is presented.
研究得出电气石纳米化过程中，颗粒的大小和其结构稳定性正相关，和其表面化学活性反相关的关系。
The research shows that the smaller the particle size is, the stronger the chemical mobility of the surface is, while the weaker the structural stability is.
提出一种采用双谐振器敏感结构的谐振式传感器，传感器的敏感元件包括两个结构参数一致的谐振器，传感器的闭环控制系统由两个幅度控制器和一个反相器组成。
A new resonant sensor consisting of two resonators of uniform structure and size is presented. The closed loop control system is composed of two amplitude controllers and an inverter.
形成脏的味与脏的机能相反，是因为物质结构和机能活动之间的阴阳对立、阴阳互根、阴阳平衡、阴阳协调，是相反相成的原则。
The function forming viscera from taste is opposite to the function of the viscera due to the principle of opposition between YIN and yang, in…
采用YA-16多闪光高速摄影反相拍摄导爆管经过不同的消爆空间后出口流场的动态结构，以及出口火焰在持续时间内的累积照片，从有利于点燃延期药的角度出发，对出口流场进行了研究。
Many photographs of out let flow field and flame after different decay space were presented by use of YA-16 high speed camera with multi-flashes in an opposite photograph and time accumlate camera.
采用YA-16多闪光高速摄影反相拍摄导爆管经过不同的消爆空间后出口流场的动态结构，以及出口火焰在持续时间内的累积照片，从有利于点燃延期药的角度出发，对出口流场进行了研究。
Many photographs of out let flow field and flame after different decay space were presented by use of YA-16 high speed camera with multi-flashes in an opposite photograph and time accumlate camera.
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