Among many characteristic paramete rs to represent the particle image,t he practical sphericity and the roundness can be used to express the degree of cemen t particles nearing sphere or circul arity.

• 在众多表示颗粒形貌的特征参数中,实用球形度和圆形度可以用来表征水泥颗粒群接近球或圆的程度,并且能够方便地用现有的检测方法和仪器进行量化。