particle-particle interaction 粒子粒子相互作用
fluid-particle interaction 流体颗粒相互作用
RW Particle Interaction 浪面粒子交互
water particle interaction 水粒作用
three-particle interaction 三粒子交互作用
inter-particle interaction 粒子相互作用
plasma-particle interaction 颗粒与等离子体流相互作用
vortex-particle interaction 涡颗粒相互作用
The basic principles of DEM(discrete element model), and the equations of particle motion and models of particle particle interaction are introduced.
介绍了离散元（DEM）方法的基本原理、 颗粒运动控制方程和颗粒相互作用力的数学模型。
Fifthly, based on the consideration of sediment diffusion because of sediment particle interaction, the equation of vertical distribution of sediment concentration is derived.
五是在考虑泥沙颗粒碰撞扩散的基础上，推导了泥沙浓度沿垂线的分布规律。
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