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。
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。
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.
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