扩散

The mixture was filtrated and the residue was dried.

求出了颗粒内有效扩散系数和颗粒内扩散速率常数。

Project and establishment of new grouting method is significance of challenge.

通过灌浆压力和扩散半径，利用前面的扩散公式计算注浆时间和注浆量，在此基础上建立了新的注浆控制方法的数学模型，同时确立了施工工艺和施工程序。

First, a full three-dimensional numerical model is developed, which considering not only the rib resistance to the species, but both the single- and two-phase flow and transport in the gas channels and diffusers at both the anode and cathode sides of PEM fuel cell. Two sets of boundary conditions, one for a conventional flow field and the other for an interdigitated one, are presented. A detailed discussion of the numerical techniques for the PEM fuel cell model is given with a flow diagram to provide an overview of the solution procedure using FORTRAN language.

该模型考虑了双极板上流道间的筋部对于反应气体传递阻力以及电流密度分布的影响，从而使模型具有三维特性；建模过程中进一步考虑了流道和扩散层中可能存在的液态水，从而将现有的单相流动模型拓展成为两相流动模型，因此，该模型可以同时模拟电池内部阴极、阳极侧流道和扩散层中两相流动的发生和分布情况；分别给出了平行流场燃料电池和交指型燃料电池的边界条件；详细讨论的三维模型的耦合求解算法和技巧；用实验数据验证的该模型的准确性。

The applications of outgassing technology in industrial field were summarized with three kinds of outgassing models analyzed,ie.

总结了放气研究在工业领域的各种应用，分析了真空环境下非金属材料放气的三种模型：Schram模型、扩散模型和基于马列夫理论吸附扩散模型。

The applications of outgassing technology in industrial field were summarized with three kinds of outgassing models analyzed, ie. Schram model, diffusion model and adsorption-diffusion model based on Malev's theory.

总结了放气研究在工业领域的各种应用，分析了真空环境下非金属材料放气的三种模型：Schram模、扩散模型和基于马列夫理论吸附扩散模型。

The objective of this part is to investigate the effects of the location of the gas-liquid interface along the channel direction under various cathode humidification conditions and gas diffusion layer porosities in the conventional flow field.

主要是探讨在阴极的流道及扩散层中，阴极的增湿情况以及阴极气体扩散层的孔隙度改变时对汽液界面位置的影响。

The other was the transitional microstructure zone in which there was no TCP phase and consisted of rafted γ′ and"田"type γ′.

另外，在Matano平面处，Al和Ta的扩散流量提高了近一倍；W的扩散流量提高了近三倍。

At the same time,a tension stress is applied on theγ′phase interfaces along the direction parallel to the stress axis,which results in the lattice expansion ofγ′phase to trap the Al,Ta atoms with the bigger radius.This brings out the accumulation of the solute atoms to form the N-type rafted structure.Al,Ta atoms with bigger radius diffuse to the {100} plane to form the linked bond of the heterogeneous atoms and the stable stacking mode,this is a main reason of promoting the transformation ofγ′phase into the N-type rafted structure.And the change of the strain energy density in different interfaces of the cubical-likeγ′phase is thought to be the driving force of the elements diffusion and theγ′phase directional growth during creep.

拉伸蠕变期间，类立方γ\'相中与施加应力轴垂直的界面受水平切应力，使晶格收缩可排斥较大半径的Al、Ta原子；与应力轴平行的界面受拉伸张应力，使晶格扩张可诱捕较大半径的Al、Ta原子，由此引起的原子偏聚形成γ\'相是自由能降低的过程；其中，较大半径的Al、Ta原子扩散迁移至{100}晶面，形成异类原子结合键及稳定的堆垛方式，是促使γ\'相形成N-型筏状结构的主要原因；而γ\'相不同界面的应变能密度变化是元素扩散及γ\'相定向粗化的驱动力。

On the basis of analyzing the product diffusion behavior in knowledgeable manufacturing, a nonlinear system model of the repurchasing competitive products' diffusion behavior is established.

基于对知识化制造环境中产品扩散行为的分析，给出重复购买竞争产品扩散行为的非线性模型。

Our study shows that, aluminum segregates on the alloy surface through the grain boundary diffusion and combines with oxygen to form dense Al2O3 oxide film which blocks oxygen to diffuse into the niobium matrix.

研究表明：铝通过晶界扩散偏聚在合金表面，并与氧结合生成致密的Al2O3氧化膜，阻挡氧向铌基体扩散。

The concept of equivalent rotationally rigidity is offered and the formula of rotationally rigidity is obtained.

主要做了如下几个方面的工作：对伸臂位于顶部的单层框架—筒体模型进行分析，提出了等效转动约束的概念和转动约束刚度的表达式。

Male cats normally do not need aftercare with the exception of the night after the anesthetic.

男猫通常不需要善后除了晚上的麻醉。