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本文以 P2_12_12_1空间群为例,采用结构因子代数方法推导出适用于±π/2型相角估算的1.5阶和2.5阶代数公式,并应用于两个已知晶体结构的±π/2相角计算,获得了令人满意的结果.
Taking the P2_12_12_1 space group as an example, the 1.5 and 2.5 order algebraic equations applicable to ± π / 2 phase angle estimation are deduced by the structure factor algebra method and applied to ± π / 2 phase angles of two known crystal structures Calculated to obtain satisfactory results.