二维分布

But there are few studies on mixing and advection of pollutant in wave environment with turbulence model.

利用二维模型研究了波浪和波流环境中的扩散系数，利用二维和三维模型模拟分析了不同流场环境中射流流场和浓度场的分布。

The mutual coherence and angular correlation function of scattered wave from two dimensional non-Gaussian rough surfaces is deduced using the Gram-Charlie distribution, then the pulse scattering from two dimensional rough sea surface is calculated, and pulse broadeding is discussed.

基于Gram-Charlie分布函数并利用三阶统计特性推导出了非Gaussian二维粗糙面的双频互相关和角相关函数的计算公式，并以二维海面为例计算了其对几种典型波形脉冲的散射，讨论了脉冲展宽效应。

Suppose is two-dimension random variable, if there is nonnegative, for arbitrary real value such that

则称是二维连续型随机变量，函数称为二维连续型随机变量的分布密度，或称为的联合密度。

Transmitting and receiving impulse response of two-dimensional array are obtained by the summing impulse response of a single rectangular element with differentia delay time. The approximation arithmetic of array element impulse response is discussed.

讨论了单阵元声场脉冲响应函数的快速近似算法，通过对不同延时量的矩形单阵元声场脉冲响应函数进行叠加，得到了二维换能器阵列的发射和接收脉冲响应函数，再施加以宽带脉冲激励函数，从而得到二维换能器阵列的声场分布。

Besides merits of the two dimensional generation of random aggregate model, It consider the effect of the radius of the different aggregates, which were assumed to obey normal distribution. Consequently, the numerical model generated is reasonable.5. The 3-D random model of convex polyhedron aggregate was generated with 3D-RAS.

三维混凝土随机骨料投放算法是二维投放算法的延伸，除了具有二维算法的一切优点外，还考虑了骨料粒径的变化，假定骨料粒径服从正态分布，从而使该软件生成的随机骨料模型和实际结构更为接近。5。

A three-dimensional anisotropic etch rate distribution of Si can be described by two-dimensional etch rate distribu-tions in a series of crystal planes.

硅各向异性腐蚀速率三维分布可由一系列晶面上的二维腐蚀速率分布表示。

Firstly, we establish the 3-D heat transfer model of the swine crura under the effect of indirect monkshood moxibustion, analyze the temperature distribution on the surface of the monkshood during the moxibustion in the experiment, then apply the boundary condition to the model with the air convection considered and calculate the temperature and heat flux distribution of the 3-D model at different times. Beside, we also compare the results of the 3-D model with the experiment and the results of the 2-D model to verify the correctness of the 3-D model.

本文先建立了艾炷隔附子饼灸作用于生物组织的三维传热模型，然后根据实验条件分析了艾炷燃烧过程中附子饼底面的温度分布情况，并在模型上施加了新建立的温度边界条件，同时考虑了生物模型表面的空气对流条件，计算得到了三维生物模型在不同时刻的温度分布图和热流量分布图，而且对三维模型的计算结果、实验以及二维模型的模拟数据进行了比较，验证了三维模型的准确性。

Therefore, in this thesis, a new set of models about breaking probability and whitecap coverage is set up using this breaking criterion. Under the assumption of linear ocean waves, and in the light of the theoretical framework about the probabilistic distribution of wave characteristics (Sun Fu 1988), several probabilistic distributions of wave characteristics that is necessary for the estimation of breaking probability and whitecap coverage are derived.

在线性海浪假设下，基于孙孚（1988）关于三维海浪要素统计分布的理论框架，具体给出二维海浪波峰处质点水平速度和表观相速的联合分布等分布函数，在此基础上，根据运动学判据，分别建立起风浪破碎率和白浪覆盖率的理论模式。

Then the absorbed pump power density, 2D distributions of temperature and index of refraction are also analyzed and discussed.

数值计算的结果表明二维效应的温度分布和应力分布要比一维效应给出的分布更均匀。

Vertical NAD distributions could be well-fitted by β function and the two-dimennsional NAD distribution by the trend surface equation of relative crown height and relative crown radius.

NAD的水平和垂直分布均可用β分布函数表达，而相对冠高和冠径的二次趋势面表达式可很好地描述NAD二维空间分布。

She gently rebuff ed him, but agreed that they could be friends

她婉言拒绝了，但同意作为朋友相处。

If in the penal farm, you were sure to be criticized.

要是在劳改农场，你等着挨绳子吧！