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对３种及不同产地１２个样品的中药蛇床子进行了粉末Ｘ衍射分析。结果表明：不同产地蛇床子的衍射图谱按其几何拓扑性质大致可分为４类相似衍射模糊图形，与ＴＬＣ分析的结果基本一致，为中药鉴别提供了新的谱学分析依据。
The powder X-ray diffraction analysis was performed on Cnidium monnieri from three species and 12 samples from different origins. The results show that the diffraction patterns of Cnidium monnieri in different origins can be roughly classified into four types of similar fuzzy patterns based on their geometric topological properties, which are basically consistent with the results of TLC analysis. This provides a new basis for the analysis of Chinese medicinal materials.