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在系数倍率法的基础上提出一种新的分光光度法-双浓度系数倍率法．应用新法测定了复方丁卡因注射液．理论和实验初步证明了新法可用于一些组分吸收差异较大的双组分混合物的测定．
On the basis of the coefficient multiplication method, a new spectrophotometry - double concentration factor ratio method is proposed. Application of new method for the determination of compound tetracaine injection. The theory and experiment preliminary proved that the new method can be used for the determination of two-component mixture with some differences in the absorption of components.