The density of particle

In plasmas , when the density of particle number is very high , the thermal de Broglie wavelength is similar to the average interparticle distance , both the quantum effect and collective effect is important , this is so called quantum plasmas .

当等离子体的密度很高时，德布罗意波长与粒子间的平均间距相当，此时量子效应和集体效应同时起作用，这种等离子体被称为量子等离子体。

Al2O3 can effectively improve the density of composite particle ;

Al2O3可有效地增加复合微粒的密度；

The state density of particle lying in simple exponential function potential field is discussed . Bose - Einstein condensation 's condition and property of the ideal Bose gas are studied .

以简单的幂函数势为例讨论了在外势场中的粒子态密度，以及理想玻色气体实现玻色&爱因斯坦凝聚的条件和性质。

The density and the number of particle improve in identity time and area .

单位时间、单位面积内所包含的粒子数增加，颗粒密度增大。

Escape operator and repulsion operator based on artifical immune ( AI ) theory are proposed , which can keep the diversity of particle swarm by checking the density of particle individuals and swarm to change particles tracks .

在DDPSO算法基础上，基于人工免疫（ArtificalImmune，AI）原理，设计了粒子逃逸算子和群体排斥算子，通过检测粒子个体和群体浓度改变粒子运动轨迹，以保持个体和群体的多样性。

With higher primary air rate , particles are more concentrated . The average size of particle is larger in primary air control areas , the relatively density of particle is smaller and the particle volume flow is larger in the recirculation region .

较大的一次风率下，一次风作用区域颗粒更加集中，颗粒平均粒径较大，回流区颗粒相对数密度较小，颗粒体积流量较大。