KrumbeinBNC⁹¹⁵¹⁷⁺⁸ 基本例句 n.克伦宾¹⁰⁰ The effectiveness of classical sphericity and Krumbein sphericity was compared to describe chip-shaped fossil fuel, and the influence of sphericity on fluidization characteristics was studied. 比较了不同球形度概念对片状化石燃料的描述效果，研究了片状化石燃料球形度变化对其流态化特征的影响。 cnki