The density matrix and the entropy are calculated.
计算了密度矩阵、配分函数和熵。
Using the density matrix theory describes the absorption and dispersion properties of the detecting light.
用密度矩阵理论描述了系统对探测光的吸收和色散性质。
In some cases, however, the quantitatively ac-curate results necessitate the density matrix theory and the semiclassical model.
但在一些场合下，取半经典和密度矩阵模型对进行定量的计算是十分必要的。
The equation of three step photoionization for describing the field and the density matrix as well as the atomic population was derived.
推导了三步光电离的场方程组和原子布居的密度矩阵方程组。
An analytic representation for the third-harmonic generation along the well is derived by the density matrix operator theory of the quantum mechanics.
利用量子力学中的密度矩阵算符理论导出了该系统中三次谐波产生的解析表达式。
Since most chemical reactions are carried out in the liquid phase, the density matrix theory has been widely used in the study of molecular reaction dynamics.
由于多数化学反应在液相中进行，故密度矩阵理论被广泛地应用于研究液相分子反应动力学。
We start from the schrodinger equation, researching on the interaction process of cold atoms system with Raman laser pulse, and then educe the density matrix equation.
第二章推导出了原子与拉曼脉冲激光作用后的能态分布矩阵以及原子在重力场中的传输矩阵。
We test the separability of the density matrix by researching the simple combinatorial condition (the "degree condition"), the condition is directly related to the PPT-criterion.
通过对图的密度矩阵简单的组合条件(“度数条件”)判断图的密度矩阵的可分性。这个条件直接与PPT判据相联系。
The matrix of power spectral density function of fluctuating wind load is established first.
首先建立了脉动风荷载的功率谱密度函数矩阵。
For this object, a method of determining fuzzy integral density with membership matrix is proposed, and the classifier ensemble algorithm based on fuzzy integral is introduced.
给出了基于隶属度矩阵的模糊积分密度确定方法，介绍了基于模糊积分的分类器集成算法。
The porosity and permeability of matrix, and the width, density and direction parameters of fractures were obtained by core analysis, well logging, seism and thin section observation methods.
利用岩心分析、测井、地震、薄片分析等静态描述手段测试并计算了基质的孔隙度和渗透率，得到裂缝的宽度、密度和方位等参数。
The effects of atomic coherence on fiber amplifiers pumped by two lasers with different frequences are studied by using density matrix theory.
用密度矩阵的方法从理论上分析了不同频率的两个激光场混合泵浦的光纤放大器中，由光场诱导的原子相干效应。
This paper points out that we can use the density function of the Gaussian distribution to set a thinned array, extending the covariance matrix will advance the gain clearly.
提出利用高斯随机分布的密度函数设置稀疏阵列，在稀疏阵列得到的协方差矩阵经扩展后，增益有了明显的提高。
Objective To explore the relation between micro vascular density (MVD), expression of matrix metalloproteinase-9 (MMP-9) and malignancy in glioma.
目的探讨微血管密度（MVD）和基质金属蛋白酶9（MMP 9）的表达与人脑胶质瘤恶性程度及预后的关系。
On the basis of force density matrix of cable element, a force density matrix of triangle membrane element is introduced.
本文在已有的索单元力密度矩阵的基础上推导了三角形膜单元的力密度矩阵。
A method calculating one body density matrix of nucleus in the mean field shell model is proposed.
提出平均场壳模型下原子核单体密度矩阵的一种计算方法，验证该方法的可靠性。
Made of high strength-low density fibers and a matrix, the fibrous composite enjoys many excellent properties or special characteristics and finds wide applications.
纤维增强复合材料是由高强度、低密度的纤维材料与基体组成，具有很多其它材料所不具有的特性，其应用范围越来越大。
In this paper the method of density matrix is used to describe two coupled modes.
采用密度矩阵方法描述了两模反向耦合。
The algorithm constructs a error-probability density sum-matrix according to direction finding information, and determines the target which has the highest error probability density sum in the area.
该方法根据测向信息，构造误差概率密度和矩阵，根据矩阵参数将测量区域内概率密度和的最大值点判定为辐射源位置。
High density dislocation pile-up lies in the interface of the matrix and the second phase, which induces the sub-structure fining of the matrix.
在基体与析出相的界面上存在高密度位错堆积，从而引起基体金属亚结构细化。
The concept of effective density and water content were introduced to describe the physical state of the clay matrix filling between sand particles.
引入有效粘土密度和有效含水率的概念，描述石英砂颗粒之间的粘土基质的物理状态。
The method of density matrix renormalization-group is applied to obtain logarithmic behavior of the entropy.
我们利用密度矩阵重整化群方法来研究熵的对数行为。
A general connection between the reduced fidelity susceptibility and quantum phase transitions is given in terms of the relation between reduced density matrix and ground-state energy.
根据约化密度矩阵与基态能量之间的关系，我们给出了约化保真率和量子相变之间的一般关系。
With the characteristic of high energy density, the reaction between metal matrix fuel and water can be used for underwater high-velocity propulsion and new generation fuel cell.
金属基燃料与水反应具有能量密度高的特点，可用于水下高速推进，也可用于新一代燃料电池。
The relationship among temperature, density, matrix suction and water content was exponential.
基质吸力随密度的增大而增大；
By using the method of density matrix renormalization group, the ground state entanglement in different systems is studied.
通过密度矩阵重整化群的方法，我们研究了不同系统中的基态纠缠。
This paper points out that a thinned array can be set with the density function of the Gaussian distribution, after the extending of covariance matrix the gain can be increased clearly.
提出利用高斯随机分布的密度函数设置稀疏阵列，稀疏阵列得到的协方差矩阵经扩展后，增益会有明显的提高。
Such devices have high energy density delivery capacity combined with the favourable properties of a neutral organic plastic crystal matrix such as succinonitrile.
这样的装置具有高的能量密度提供能力并兼具中性有机塑性晶体基质例如丁二腈的有利性能。
With the increase of copper oxide content in silver matrix, the density and the electric conductivity of AgCuO materials tended to decrease.
两种方法制备的银氧化铜材料随着氧化铜含量的升高，材料的致密度、导电性均呈下降趋势。
Paraffin sections through observation, found that feeding the bees EM biological agents in the intestinal Peritrophic matrix (PM) thickness and density have increased.
通过石蜡切片观察，发现饲喂em生物制剂的蜜蜂中肠围食膜厚度和致密度有一定的增加。
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