本文从理想流体、均匀密度模型解爱因斯坦场方程得到恒星的临界质量。
In this paper, the critical mass of stars is obtained by solving Einstein's field equations by means of the model of perfect fluid medium with uniform density.
基于以上分析，用动态规划方法建立了可变间伐间隔期的林分经营密度模型。
This study on management density model of the mobile thinning interval overcomes the shortcoming of stationary interval which the former similar researches have, and it is convenient to practice.
同时利用拉普拉斯密度模型作为特征系数的稀疏惩罚函数，保证了图像结构的稀疏性。
At the same time, this algorithm utilized the Laplace density model as the feature coefficients sparse punitive function to ensure an image's sparse structure.
建立了这一深度空间内的密度模型，为利用重力场建模提供了初始模型和密度空间约束。
The density model in this depth is very much useful in the establishment of initial model and density space constraint for gravity modeling.
应用现代通信理论对成像系统进行了分析，建立了模拟和数字图像的目标信息密度模型。
The modern communication theory is used in the analysis of imaging systems. The object information density model is built for analogue and digital image respectively.
根据模型分解的思想，采用变密度多层地壳密度模型，据此推导了相应的重力异常正演计算公式。
The variable density multilayered crustal model is put forward according to the idea of model decompose in this paper, and the corresponding gravity forward formula is deduced.
最后，本文还将把人工神经网络建立的林分密度模型用于森林资源资产评估，进行生长收获的预估。
At last, this paper will also apply the stand density model established with artificial neural network in asset assessment of forest resources and the estimation of growth and harvest.
通过常密度模型、变密度模型及地震反演得到的莫霍面的比较，证实变密度模型更适合于莫霍面结构的反演。
The variable density model is more suitable for inversion of Moho depths structures than constant density model by comparison of Moho depth from seismic inversion.
本论文在此基础上，着重对反映城市化（尤其是其中的郊区化）进程中日趋复杂的现代城市空间结构变化的人口密度模型进行归纳整理。
On the base of McDonald's previous work, this paper put an emphasis on the survey of modern urban density functions, which is becoming increasingly complicated under the influence of suburbanization.
在这些模型中并没有一种在任何情况下都是最好的，因此，对于特定轨道选择合适的大气密度模型对提高定轨预报的精度是非常重要的。
Therefore, it is very important to choose an appropriate atmospheric density model for a specific orbit to improve the accuracy of orbit forecast.
该模型显示，几年后，内部辐射带的电子密度将回到正常值。
After several years, the inner-belt electron density would return to normal, the model suggests.
这样的设计模型将会提升商务舱乘客的密度和舒适度。
This model is designed to, paradoxically, improve both passenger density and comfort in business class.
这些图片将会用来测试是否如之前模型所预测的一样，暗物质在某些星系集群里密度更大。
These maps are being used to test previous results that suggest that dark matter is more densely packed inside clusters than some models predict.
通用汽车的风险投资部门总裁乔恩Lauckner说：提高能源密度的整个概念涉及到车辆的种类奖项时他表示，目前还不清楚多少钱，新技术将保存，但“我只想说，这是非常重要，它不 是一该电压电流模型使用的锂锰尖晶石阴极制成的锂离子电池(“尖晶石"指的是三维的原子排列)。
The current model of the Volt uses lithium-ion batteries made with lithium-manganese spinel cathodes ("spinel" refers to the three-dimensional arrangement of atoms in the material).
在这样情况，许多分数可能性密度函数模型是接近反应现象的一个适当的方法。
In such a situation, mass fraction probability density function model is an appropriate method to approach the reaction phenomena.
模型中考虑了人群密度对疏散能力的影响，改变以往把建筑出口疏散能力视为常数而带来的不能真实反应其疏散能力的状况。
The model considered the influence of the crowd density on the evacuation capability, and the capacity of the egress was taken as a variable rather than a constant as former.
大爆炸模型认为，现在的一切，包括曾经在一个近乎无限密度的单点集中的宇宙。
The Big Bang model holds that everything that now comprises the universe was once concentrated in a single point of near-infinite density.
密度与林龄的拟合以S函数为最优模型。
S function was the best model in the fitting between stand density and age.
这次伦敦的特别展览还展出了霍金曾经用来解释他想法的模型，即无法想象密度的沉重物体，其强大重力吞没接近的一切，甚至是光。
The London exhibit displayed the model Hawking once used to explain his ideas about the unimaginably dense, heavy objects whose powerful gravity swallows up everything that comes close, even light.
现有的密度补偿模型不适合高温高压饱和蒸汽的流量测量，密度补偿精度较低，导致蒸汽流量测量误差较大。
The existing density compensator model does not fit high temperature and pressure saturated vapor, the density compensator precision is low and causes big error in saturated vapor measurement.
林龄单因变量的蓄积量生长模型决定系数低，引入地位指数和密度指数再次参数化的生长模型可显著提高模型拟合度。
Single age variable stock volume growth model had low coefficient of determination, but it was improved a lot by introducing site index and stand density index in reparameterization.
证明新模型的基本图，即车流渐近稳态的平均速度与道路上的车辆密度之间的函数关系与FI模型的完全相同。
It is proved that the fundamental diagram of the average traffic flow speed as the function of the car density for the new model is exactly the same as for fi model.
利用概率分析和随机模型的密度演化方法，导出了系统的一些新的可靠性指标和最优检测策略。
The new system reliability indices and the optimal inspection policy are obtained by using probability analysis and the density evolution method in stochastic.
本文改进BCS型裂纹位错模型，并对裂纹顶端范性区的位错密度分布进行了计算。
The dislocation distribution function in the plastic zone at a crack tip is calculated with the help of a modified BCS-type crack model.
在分析桃红葡萄酒酒精发酵过程中密度实测数据的基础上，建立了桃红葡萄酒酒精发酵过程密度变化规律的数学模型。
Based on the analysis of actual data of density during fermentation, the mathematic model of density changes during pink wine alcohol fermentation was established.
我们改进了计算体粘滞系数的方法使之更为自然并应用于密度依赖模型。
We improve the method calculating the bulk viscosity naturally and apply it to the density dependent model.
提出了一种新的类条件密度函数估计的PNN模型及其算法。
A novel PNN model with training algorithms is proposed for class conditional density estimation.
目的借助气象、环境与遥感监测指标建立微小按蚊密度评价模型。
Objective To establish Anopheles minimus density evaluation model based on climate, environmental and remote sensing data.
目的借助气象、环境与遥感监测指标建立微小按蚊密度评价模型。
Objective To establish Anopheles minimus density evaluation model based on climate, environmental and remote sensing data.
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