扩散

Furthermore, social progress and IT advancement strengthen the urban spatial diffusion. Such diffusion effect and the increasingly constant exchanges between city and its surrounding areas accelerate the extension of city and the integration of urban and rural areas.

随着社会进步和和信息技术的发展，加强了城市的空间扩散能力，城市空间扩散的效应和城市与周边区域间的交流日益频繁，加快了城市向外的拓展，促进了城乡间的快速融合。

According to the theory of flow diffusion and convection, three-dimensional state equation of radon field is established for constant and variable diffusion coefficient and convection rate. The numerical solutions for different coefficient and different boundary conditions are obtained for two models of radon field which have respectively source in the side and inside of collapse column.

根据流体场的扩散理论和对流理论，建立了扩散系数与对流速度为常量或变量情况下的氡气场三维状态方程；对於陷落柱柱体侧面有源氡气场和柱体体内有源氡气场两种理论模型，给出了不同系数和边界条件下的数值解的形式。

We also used diffusion equation to solve curren-time relation of ion diffusion under certain boundary conditions.

应用扩散方程，在一定的边界条件下解得电流注入过程中离子扩散的电流-时间关系。

After analysis with diffusion equation under 1976 U.

然后，利用大气扩散模型，按扩散方程计算分析了该不均匀体可能发生的电离层层区。

Analysis of its behavior shows that the generalized diffusion process combines properties of both forward and inverse diffusion.

其行为的分析表明，广义扩散过程结合了这两个属性正，逆扩散。

The second chapter discusses the oxidation and diffusion systems and the process of our experiment.

第二章介绍进行开管Ga扩散所用的氧化和扩散系统、样品制备过程及其分凝特性的测量。

The hot-rolled composite is a diffusion process, and the diffusion range of the elements is about 50 μm.

热轧复合为扩散型冶金结合，元素扩散范围在50μm范围内。

The results showed that diffusion coefficient and diffusive distance increased w ith raising of negative substrate bias.

结果表明扩散系数和扩散距离都随着负衬底偏压的增大而增大。

We find that maximal diffusive flux can be several times even scores of times larger than actual diffusive flux.

研究表明最大扩散气量可能是实际扩散气量的几倍甚至几十倍。

In other words the important diffusive motion is migration of the radical segment retarded to the low diffusivity of the whole chain.

换言之，重要的扩散移动是自由基链段的迁移减慢为低扩散系数的整个分子链的迁移。

Do you know, i need you to come back

你知道吗，我需要你回来

Yang yinshu、Wang xiangsheng、Li decang,The first discovery of haemaphysalis conicinna.

1〕 杨银书，王祥生，李德昌。安徽省首次发现嗜群血蜱。