packing density of particle 颗粒堆积密度
density of primary particle flux 一次粒子通量密度
density of gas particle number 气体粒子数密度
gradient of particle density 粒子密度陡度
The effects of relative particle diameter and particle volume fraction on the packing density of particles mixtures were discussed by granule packing model.
采用颗粒堆积模型，讨论了矿物掺合料颗粒的相对粒径、体积含量对颗粒混合物体系堆积密实度的影响。
This paper explores the relation between dissolving quality and particle density of milk powder and obtains the special range of formula milk powder density.
通过对配方奶粉冲调状态与颗粒密度关系的分析，确定了配方奶粉密度的特性值范围，从而简述生产过程中控制奶粉冲调性的要点。
Using the periodic orbit theory, we computed the quantum level density of a particle in the two-dimensional harmonic oscillator potential with and without the magnetic flux line for different cases.
利用周期轨道理论，我们计算了在不同情况下，一个粒子在二维谐振子势中存在和不存在磁通量时的量子能级密度。
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