摘要：悬浮于液体中的亚微米级超细颗粒作布朗运动，其运动的位移与粒径大小有密切的联系，因而提出了测量超细颗粒布朗运动轨迹获取粉体材料的粒径及其分布信息的一种新方法。本文详细介绍了在显微TV计算机系统中获取颗粒布朗运动轨变时跟踪处理算法。

关键词：超细颗粒；布朗运动；轨迹跟踪

Abstract ：The submicron particles suspended in liquid do Brownian movement and it's mov-

ing displacement is relation to the particle size.This paper introduces a new method that tracesBrownian movement track and draws particle's size and size distribution. The tracing algorithmfor drawing track of particle's Brownian movement in microscope TV computer system is statedin detail.

Keywords：submicron particles;Brownian movement ; track tracing