The main natures of the diffusion are universality, inevitability, non-linear and other properties. The main diffusion approaches are string diffusion, radiation diffusion, polymer diffusion, reverse diffusion feature and so on. 3.

The steady-state and time-domain analytical solutions of the diffusion equation for near-IR radiation through a four-layered highly scattering matched medium have been obtained. The matched boundary condition and the extrapolated one have been considered.

根据匹配边界条件和外推边界条件，得到了近红外线通过四层高散射匹配介质的稳态和时域漫射方程的解。

Coupling transport-diffusion method of calculating radiation transfer in a cavity

空腔辐射传输的扩散－输运耦合计算

Study on Atmospheric Diffusion Parameter of Radiation Fog in Anning City, Yunnan Province

云南安宁市辐射雾大气扩散参数研究

P 2 diffusion theory of radiation transfer problems

辐射传输问题的P2扩散近似

The methods and modules which have good application experiences are adapted for source term estimation, the computation of atmospheric diffusion and radiation dose, analysis of emergency measures. The system interface is user friendly.

源项估计、大气扩散与辐射剂量计算以及应急防护措施分析采用国内外具有良好应用经验和反映当前应急干预原则要求的方法和模块，系统界面的设计强调评价流程的逻辑结构和用户友好性。

Their absorption was first-order process besides the passive diffusion mechanism, and facilitated diffusion and active transport may also take part in the transport process.

栀子苷在大鼠小肠的吸收速率随浓度的增加而减小，提示药物的吸收机制除了被动扩散外，可能有主动转运和易化扩散因素；

With the decrease of sanchinoside R_ ( 1) and ginsenoside Rg_1 concentration, the absorption rate is increased, their absorption was is first-order process, besides the passive diffusion mechanism, facilitated diffusion and active transport may also take part in the transport process.

其吸收速率随着浓度的增加而逐渐减小，药物在小肠中的吸收不呈现一级动力学过程，吸收机制除了被动扩散以外，可能还有易化扩散和主动转运；

Reliability Analysis of Estimating Annual Atmospheric Diffusion Factor Using Meteorological Correlation Method

应用气象相关分析方法估算年均大气弥散因子的可靠性分析

Numerical Simulation for Atmospheric Diffusion Wind and Concentration Field in Mountain Area

山区大气扩散风场及浓度场的数值模拟

The Application of Atmospheric Diffusion Model in the Emergency Meteorological Service

大气扩散模型在气象应急保障中的应用

Programming of calculation system of a atmospheric diffusion model

大气扩散模式计算系统程序编制

Both the outlet diffuser and the grid were applied in engineering.

这两项技术已在工程中成功地推广应用。

Under the environment of Visual C++ 6.0, the parametric 3-D modeling software PCAD-3D is developed, which includes column blade, curved blade, double channel impeller, volute and radial vaned diffuser, etc.

在Visual c++6.0编程环境下，开发了扭曲叶片、圆柱叶片、双流道叶轮、蜗壳和径向导叶等的参数化三维造型软件PCAD-3D。

It is not only used to design centrifugal pump impeller and diffuser, but also used to design non_clogging pump impeller and diffuser, radial diffuser, space diffuser, etc.

它除了可进行清水泵的叶轮、蜗壳水力设计外，还可设计无堵塞泵的叶轮、蜗壳以及径向导叶、空间导叶等水力件的水力设计。

The numerical results indicate that the separation flow in axial and radial diffuser was severely, especially in the axial diffuser, which could decrease the efficiency of this centrifugal compressor.

在堵塞状态时径向扩压器和轴向扩压器中都存在不同程度的分离，尤其是轴向扩压器中分离现象更为严重，这些都造成了不同程度的气流损失，导致了效率的降低；

In the whole flow range, the impeller operates under subsonic condition and the radial diffuser operates under transonic condition, thus the choked mass flow rate is determined by the throat area of the radial diffuser.

整个特性线范围内离心叶轮基本在亚音速情况下工作，而径向扩压器是在跨音速条件下工作，离心压气机整机的最大流量是由径向扩压器的喉部面积决定的；

NUMERICAL CALCULATION OF SUBSONIC TURBULENT RECIRCULATING COMPRESSIBLE FLUID IN A CONICAL DIFFUSER Computer Simulation of Complex Turbulent Flow in a Conical Diffuser with Outlet Pipe

有分离流的亚声速圆锥扩压器内紊流可压缩粘性流的数值计算带后续管的渐扩管路内复杂紊流的计算机仿真

Numerical calculation of subsonic compressible turbulent flow in a conical diffuser

亚声速圆锥扩压器内紊流可压缩流动的数值计算

Study on Near-wall Characteristics of the Internal Turbulence in a Conical Diffuser

对锥形渐扩管内紊流近壁特性的研究

Computer Simulation of Complex Turbulent Flow in a Conical Diffuser with Outlet Pipe

带后续管的渐扩管路内复杂紊流的计算机仿真