1. The storage tank is simplified into three particle system, including slosh particle, liquid-solid coupling particle and rigidity pulse particle. 针对立式钢制储罐抗震计算的模型简化问题，将储罐简化为三质点体系，即晃动质点、液固耦合质点、刚性脉冲质点。
2. particle accelerator : Device that accelerates a beam of fast-moving, electrically charged atoms (ions) or subatomic particles. 粒子加速器：加速高速移动带电原子（离子）束或次亚原子粒子束的装置。
3. Based on the theory of particle flow, Particle Flow Code (PFC) model of sand and clay were constituted respectively by adopting the different particle contact constitutive relationships. 本文基于颗粒流理论，引入不同的颗粒接触连接本构模型，分别建立了砂土和粘性土的颗粒流模型。
4. Relating the momentum flux of particle with the particle impact pressure on objects, a theoretical model of the particle impact pressure in fluidized bed is developed. 通过对床中物体表面与碰撞颗粒流之间的动量衡算，将颗粒流动量通量与颗粒的碰撞压力相关联，建立了流化床中颗粒碰撞压力的理论模型。
5. This study shows that particle aerodynamic diameter, particle materials, particle density and laser beam diameter influence counting efficiency significantly. 本研究指示出微粒的气动直径、种类、密度，和用来侦测的雷射光源之光束直径会明显地影响计数效率。
