查询词典 diffusion equation

The leakage current of poly-Si TFTs is owing to the high drain electric field and large trap state density at drain junction. In this thesis, we found the silicon nitride film as the diffusion barrier prevents the hydrogen atoms downward diffusion and accumulated at the channel to further reduce the trap state density.

对於复晶矽薄膜电晶体其漏电主要与缺陷密度和集极电场强度有关，在本篇论文中我们发现氮化矽绝缘层能够有效的阻挡氢原子向下扩散而累积在通道之中，更进一步的去修补通道中的缺陷。

According to the theory of excitions generation and diffusion, the relationship between spectrum intensity and the thickness of every layer, the excitons diffusion length is discussed. The result of the theory analysis is in good agreement with the experiments.

根据激子产生和扩散理论，讨论了器件性能对于各发光层的厚度及激子扩散长度的依赖关系，拟合结果与实验结果吻合。

The structure formed is FeNi〓and γ after diffusion. Owing to diffusion, the Ni distribution across the layer is gradient after heat-treatment at 600℃ for 1h.

扩散后形成了FeNi〓相以及γ相，镀层经600℃×1h的热处理后，由于扩散的影响，在镀层内部Ni含量呈现梯度分布。

Based on the mechanism of gas diffusion,factors that influence gas diffusion in concrete are analysed.

混凝土碳化速度与钢筋锈蚀速率主要取决于气体在混凝土中的传输速率。

The calculation of parameter m_0,that is the amount of CO_2 absorbed by unit volume of concrete completely carbonated,was proposed by the analysis of concrete hydration process and carbonation mechanism,and the simplification formula of fly ash concrete applied in practice was suggested.The calculation of another important parameter D_e,that is the effective diffusion coefficient,was also proposed on the basis of the mechanism gas diffusion in concrete.

通过对混凝土水化过程、碳化机理的深入分析，提出了模型参数——完全碳化时单位体积混凝土吸收二氧化碳的量m_0的计算方法，并给出了工程中常用粉煤灰混凝土的简化实用公式；基于气体在混凝土中扩散机理的分析，给出了另一个重要的模型参数——二氧化碳在混凝土中有效扩散系数D_e的计算公式。

A new kind of gas diffusion electrode- flaky and vertical gas diffusion electrode was introduced in this paper.

介绍了一种新型气体扩散电极———片状立式气体扩散电极三相界面的工作原理和优点，这种片状电极可用于气体参与反应的金属-空气电池和燃料电池。

The study focuses on transport phenomena of cathode gas diffusion layer of PEM fuel cell by using two-phase flow model. Liquid water saturation and oxygen concentration profile in gas diffusion layer and polarization curve are investigated by numerical simulations.

本研究主要探讨质子交换膜燃料电池阴极气体扩散层内的两相流传输现象，利用数值方法求解出燃料电池阴极气体扩散层内液态水饱和度分布、氧气浓度分布以及性能曲线。

A pair of redox peak of Eu~(3+) of the concentration of 1×10~(-4) mol/L appeared on both bare pyrolytic graphite electrode and bare glassy carbon electrode in HAc-NaAc 0.2 mol/L pH 6.0 buffer, and controlled by the diffusion current. There was also a good reversible redox peak of Eu~(3+) of the concentration of 1×10~(-3) mol/L on bare pyrolytic graphite electrode in Heps 0.01 mol/L pH7.4 and in the charge of diffusion current.

当底液为0.2mol/L pH6.0的HAc-NaAc缓冲溶液、Eu~(3+)浓度为1.0×10~(-4)mol/L时，在裸热解石墨电极与裸玻碳电极上均有一对氧化还原峰，且受扩散电流控制；当底液为0.01mol/L pH7.4 Hepes缓冲溶液、Eu~(3+)浓度为1.0×10~(-3)mol/L时，在裸热解石墨电极上出现一对可逆性非常好的氧化还原峰，同样受扩散电流控制。

The conclusion is that there is enough diffusion reaction between base material and interlays, vacuum diffusion bonding weldability of TiAl and 42CrMo is good.

研究发现，母材与中间层发生了扩散反应，采用加入中间层的真空扩散连接TiAl金属间化合物与 4 2CrMo钢具有良好的可焊性。

We introduce a broader range of channels enhancing growth either by external diffusion of knowledge from technology advanced countries to late-comer countries or by experiential diffusion of knowledge brought about by the interaction between venture capitalists and start-up entrepreneurs.

传统的内生成长理论著重在人力资本及研究发展的重要，我们则进一步将另外两类的知识长成管道纳入现有的理论模型：一是来自技术先进国家对技术落后国家的知识外溢效果，包括衡量以出口及外人投资为管道的技术吸收能力，与国家间技术发展的差异；二是来自创业投资者对新进公司企业家的经验传递效果。

The changes of the HAF after liver injury may be related to the volume of blood loss, the intraabdominal pressure and the pneumoperitoneum duration.

肝撞击伤伴失血后肝动脉血流量的变化与失血量、气腹压力以及气腹持续时间等有密切联系。

Reneging on our commitments to the world's poor cannot be an austerity measure, she said.

放弃我们给世界上的穷国的承诺不能成为一种紧缩措施。