查询词典 diffusion coefficient

The results show that the interplanar crystal spacing and lattice index of Al-rich α phase reduce gradually with increasing pressure. When the pressure reaches from common pressure to 5 GPa , Al-rich α phase lies on the (200) and (220) crystal faces, the interplanar crystal spacing are reduced by 1.07% and 1.15%. From common pressure to 3 GPa , the microstructure of ZA27 alloy changes from thick dendrites to fine dendrites, and finally to granular. According to the effect of solute diffusion coefficient under super high pressure and the calculation of Scherrer formula, it can be seen that the crystal organization is fine within the bounds of certain pressure. This conclusion is consistent with the experiment results.

结果表明：随着压力的增加，晶面间距和晶格常数都逐渐减小，当压力达到5 GPa时，富铝α相在(200)与(220)晶面处，晶面间距较常压力时的分别减小1.07%和1.15%；在常压至3 GPa范围内，晶粒由粗大的树枝晶→细小的树枝晶→粒状、椭球状枝晶转变的趋势，通过压力对合金凝固溶质扩散系数的影响结合Scherrer公式计算分析其组织变化原因，得出在一定的压力范围内，随着压力的增大，晶粒尺寸逐渐变小，这一结论与实验结果相符。

The diffusion coefficient of lith...

锂盐的扩散系数由对称电池的限制扩散法测得，结果为4.8×10-7cm2·S-1。

Numerical results of the energy, the velocity distribution, the mean free path, the mean collision time, the heat capacity and the self-diffusion coefficient agree well with the theoretical/experimental data.

本文用分子动力学方法模拟了系统的热力学参数和输运系数，并探讨了扰动在介质中的传播机理，最后分析和讨论了汽液界面中的相变现象。

The diffusion coefficient of niobium is much smaller than that of titanium, which requires more time to be absolutely homogenized.

元素扩散计算结果表明，提高均匀化温度可以提高元素的扩散系数； Nb的偏析系数比Ti的小得多，达到完全均匀化需要很长的时间。

Theoretical studies of this paper provide a means to evaluate the turbulent diffusion coefficient for sediment in open channel and pipe flows.

本文理论为确定明槽和管道低浓度含沙流动中扩散系数在断面上的分布提供了依据。

The measurements demonstrated that the steady state diffusion coefficient parallel to panel surface was more than 10 times as large as that of perpendicular to panel surface.

无论是静态，还是动态扩散系数，刨花经高压蒸汽处理之后的板都有较小的值，这说明蒸汽处理后板子的吸水性能得以改善。

A class of systems of impulsive delay parabolic partial differential equations with nonlinear diffusion coefficient is considered.

考虑一类具非线性扩散系数的脉冲时滞抛物型偏微分方程组，利用Green公式、垂直相加法和脉冲时滞微分不等式，获得了该类方程组在Robin边值条件下所有解振动的充分判据。

PECH based PUs showed higher phase separation than that of PPG base PUs owing to that the -Cl groups in PECH reduced the flexibility of molecule chain and hindered the formation of hydrogen bonds between ether groups in soft segments and -NH groups in hard segments. As a result, PECH based PUs have lower free volume content, diffusion coefficient and equilibrium adsorption of CO〓, benzene and ethanol through them than through PPG based PUs.

聚环氧氯丙烷醚聚氨酯的氯基降低了链段柔性，妨碍了软段中醚基与硬段中氨基的氢键作用，导致其相分离程度较聚环氧丙烷醚聚氨酯大，并使CO〓、苯和乙醇蒸汽在聚环氧氯丙烷醚聚氨酯中的渗透系数和扩散系数较聚环氧丙烷醚聚氨酯小，而偏离费克扩散的程度大。

The diffusion coefficient of Li〓 in solid phase determined by constant potential step method is about 10〓cm〓/s.

采用恒电位阶跃方法测定Li〓在固相中的扩散系数为~10〓cm〓/s。

Diffusion coefficient ; glassy polymer ; free volume theory ; plasticization effect

扩散系数；玻璃态高分子；自由体积理论；溶剂可塑化效应

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。