Objective: To establish the quality control of Coptis of Compound Mixture.

目的：建立黄连复方合剂的质量标准。

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Air is a mixture, not a compound of gases.

空气是气体的混合物，不是化合物。

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Air is a mixture, not a compound of gases.

我们把空气称为气体混合物。

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Air is a mixture, not a compound of gases.

我们把空气称为气体混合物。

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