扩散的

The formation of hexagonal island will reduce the decay rate of top layer island into the low layer island.

计算结果表明吸附原子的扩散势垒与其所在表面所属台阶类型有关；Ag原子在交换机制和跳跃机制下扩散需克服的势垒分别是0.64eV和0.93eV。

Determination of Rhenium in Raffinate and Residue from Synthesis of Methyltrioxo rhenium by ICP-AES

在电子探针测量的基础上，根据扩散理论和Ir-Re相图数据，建立了一个全新的Ir/Re两相扩散模型。

Interdiffusion problem of iridium/ rhenium was studied during preparation of iridium/ rhenium thruster.

在电子探针测量的基础上，根据扩散理论和Ir-Re相图数据，建立了一个全新的Ir/Re两相扩散模型。

A new model for self-diffusion coefficients was proposed based on both the concepts of molecular free volume and activation energy.

在考虑自由体积和局部临界扩散势能的基础上，提出一种新的计算自扩散系数模型，并给出新模型中各个因子物理含义。

Transport properties including the coefficients of self-diffusion, viscosities, and conductivities were also studied and compared.

系统地研究并比较了离子液体的扩散性质，包括体系阴阳离子的自扩散系数、粘度及电导率。

Yet, in the temperature range of 700-750℃, the deformation activation energies were much higher than the self-diffusion activation energy of grain boundary.

在850℃变形激活能与晶界自扩散激活能十分相近，表明晶界扩散控制的晶界滑动是超塑性变形的主要机制。

At the temperature range of 800～850℃, the deformation activation energy was very close to self-diffusion activation energy of grain boundary, which shows the main deformation mechanism is grain boundary sliding controlled by grain boundary diffusion.

在850℃变形激活能与晶界自扩散激活能十分相近，表明晶界扩散控制的晶界滑动是超塑性变形的主要机制。

The results show that the silicide coating is formed by reactive diffusion and the silicification process obeys parabolic relation. The coating is composed of composite structures including MoSi2 outer layer, two-phase transient zone with major NbSi2 and minor Nb5Si3, and Nb5Si3 diffusion inner layer. The coating possesses good high-temperature oxidation resistance and spalling resistance.

研究结果表明：包渗法制备硅化物涂层是通过反应扩散形成的，硅化过程服从抛物线规律；该涂层为复合结构：MoSi2相为主体层；以NbSi2相为主、并含少量Nb5Si3相的两相为过渡区；Nb5Si3相为扩散层。

Objective To improve the flexibility and stability of the filter in speckle reduction of ultrasound images.

目的 提出一种各向异性扩散滤波器的扩散参数选取方法，提高滤波器的灵活性和稳定性。

When the ratio of compressive modulus of superstratum and substratum is less than 3,academic diffused angles of natural subgrade with soft substratum under pressure in this paper are investigated.

对上下层土压缩模量比小于3的软弱下卧层的压力扩散角进行了研究，得出了扩散角理论值，可供相应工程参考。

I didn't watch TV last night, because it .

昨晚我没有看电视，因为电视机坏了。

Since this year, in a lot of villages of Beijing, TV of elevator liquid crystal was removed.

今年以来，在北京的很多小区里，电梯液晶电视被撤了下来。