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基于双能量γ射线透射方式对煤、矸石实施在线分选，阐述了一种将理论模型与几何特性相结合的区域分割识别方法．它具有识别范围宽、能有效避免统计涨落误差的影响等特点．对最大区域分割条件、分割效率及特征向量的作用问题也进行了讨论．
Based on the dual-energy γ-ray transmission method, coal and gangue are classified online, and a method of regional segmentation identification combining the theoretical model and geometric characteristics is described. It has a wide range of identification, can effectively avoid the impact of statistical fluctuations and other characteristics. The problem of the maximal region segmentation, segmentation efficiency and eigenvector is also discussed.