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用紫外光谱法对岷县地产的７种不同等级的药材进行了测试。实验结果表明不同等级的同一种药材，其紫外最大吸收峰位值相同，紫外吸收强度似无显著性差异。
Seven different grades of medicinal materials were tested by UV spectroscopy on the Qixian real estate. The experimental results show that the UV absorption peaks of the same medicinal materials of different grades are the same, and there is no significant difference in UV absorption intensity.