摘要：讨论了一种描述颗粒形状的新方法，给出了颗粒形状与颗粒衍射谱角分布的关系。

关键词：颗粒形状;衍射谱;角分布;二维付立叶变换;几何特征;

Abstract：A new method of describing particle shape is discussed based on theoretical analy.sis, the relationship between particle shape and the angle distribution of the particle diffractionspectrum are presented. Some geometric characteristics of particle are also illustrated

Key words：particle shape;diffraction spectrum;angle distribution;2 - D Fourier. transform;geometric characteristics