Methods By means of UPLC, apply factorial experiment design to investigate overall the changing rule of the contents of salvianolic acid B, tanshinol, protocatechualdehyde and etc.
方法：使用超高效液相色谱仪（UPLC），采用析因试验设计，考察了丹参饮片在不同加水倍数、煎煮时间、煎煮次数下的煎出液中丹酚酸B、丹参素、原儿茶醛等多种成份的含量变化规律。
The fourth experiment investigated whether different hands affected the results, and was a repeated measures factorial design.
第四个实验考察不同的手是否对实验结果产生影响，为被试内设计。
The first experiment was a repeated measures factorial design to study whether different ways of manually rotating impacted mental rotation of the different objects.
研究共设计了四个实验，第一个实验采用被试内设计考察不同方式的手动旋转是否对不同客体的心理旋转产生影响。
The first experiment was a repeated measures factorial design to study whether different ways of manually rotating impacted mental rotation of the different objects.
研究共设计了四个实验，第一个实验采用被试内设计考察不同方式的手动旋转是否对不同客体的心理旋转产生影响。
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