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particle density operator 粒子密度算符
Gravel particle density, hardness, as exempt by the National Product. 砂石颗粒疏密，硬度大，被国家定为免检产品。
The incompressibility of the fluid is determined by introduction of a so-called particle density number. 流体的不可压缩性是通过引人粒子数密度概念实现的。
The results show that the particle density in the films periodically oscillates indicating a formation of layered structures. 结果表明：薄膜中粒子密度沿膜厚方向呈周期性变化，存在某种有序结构；
This paper discussed the cause of distinction of the particle density and the orgin of tubular and vesicular structure in spaces. 本文还讨论了细菌周膜断裂面上颗粒密度不同的原因及腔中管泡状结构的来源。
The nonlinear space charge effect due to the nonuniform particle density distribution in bunched beam of a linac is discussed. 提出了在强流直线加速器中,由空间电荷束团的密度分布所引起的非线性效应。
The experimental results demonstrated that the magnet field could obviously increase the discharge current and enhance the particle density in corona discharges. 在负电晕放电中,磁场可提高极间自由电子的能量,增加带电粒子的浓度,增大放电电流。
Effective Ice Particle Densities Derived from Aircraft Data. 从飞机数据得到的有效冰粒子密度。
Besides, with the Hamiltonian of the interaction between the field and the atom with Kerr medium, the evolution operator and the reduced density operator of the field are derived, then the other basic work model is obtained. 其次，从光场与原子附加克尔介质相互作用哈密顿量出发，得出非线性J-C模型系统的一般时间演化算符和光场的约化密度算符，得出了本文的基本工作模型之二。
Usually it streams past the earth at less than 1 million m.p.h., but when that wind gushed from a rare gap in the sun's tangled magnetic web, its velocity exceeded 2 million m. p. h. and particle density was 30 times normal. 通常，太阳风流经地球的速度不会超过每小时100万英里，但是，当这股风是从太阳扭结在一起的磁网罕见的断层中喷出的时候，其速度就会超过每小时200万英里，密度是一般带电粒子流的30倍。
The method is testing the particle sheer stress, velocity gradient at different speed of rotation by adopting different particle density and different particle diameter suspensions. 试验结果与拜格诺试验的结果完全一致，将其结果延伸，所采用的试料更加符合生产实际。
For a transient internal point source, using the comple mentarity relation, the evolution of particle density can also be described by the well-behaved generalized Fourier expansion. 对于瞬间内部点源产生的密度剖面演化，通过解的互补性也可得到品质好的广义傅里叶展开表示。
Nonequilibrium statistical density operator 非平衡态统计算符
Theoretical calculation for AMX spin system with density operators is given and coincides with the results of experiments. 它能有效地防止单量子相干的“漏进”并避免使用数字相移器。在一般谱仪上容易实现,用密度算符理论对AMX体系进行理论计算,实验结果与理论预期相符。
MAXWELL VELOCITY DISTRIBUTION LAW DERIVED WITH DENSITY OPERATOR 用密度算子推证麦克斯韦速度分布律
Relation between dissolving quality and particle density 配方奶粉的冲调性与颗粒密度的关系
Soil quality - Physical methods - Determination of particle density 土壤质量。物理方法。颗粒密度的测定
The Reduced Atomic Density Operator in the Raman-coupled Model Raman耦合模型中原子的约化密度算符
USING DENSITY OPERATOR TO STUDY THE ELECTRON POLARIZATION 用密度算符对电子极化的研究
There wasn't a particle of truth in what he said. 他说的没有一点真话。