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Abstract: I welcome you to the fourth issue of the IEEE Communications Surveys and Tutorials in 2021. This issue includes 23 papers covering different aspects of communication networks. In particular, ...

晶体工程是制药工业的重要课题，通过调控固体材料的物理化学性质来优化药物性能。本文提出了一种结合粉末X射线衍射（PXRD）、角分辨偏振拉曼光谱（ARPRS）和密度泛函理论（DFT）的计算方法，用于区分对称性相同的晶面。以对甲苯胺形式I（PCM-I）为例，通过 ...