这一不透气的壳层(或边界层)会阻滞水分自由扩散，这种情形称为表面硬化。
This impervious layer or boundary will retard the free diffusion of moisture. This condition is referred to as case hardening.
第一个，或许是所涉及到的最简单的一个，就是气体的自由扩散。
And the first one, the simplest one, maybe, to cover, is just free expansion of a gas.
作为抗氧化剂，番茄红素可以保护细胞结构和DNA远离自由基的影响——自由基是一种会破坏健康细胞、使癌细胞扩散的微粒。
As an antioxidant, lycopene protects cell structures and DNA against the nefarious effects of free radicals-small particles that damage healthy cells and allow tumor cells to develop.
这是扩散中的熵变，气体的自由扩散，从V1到。
That's the change in entropy in expansion, free expansion of a gas, V2 from V1 to V2.
采用自由空间模型，通过控制探测数据的扩散范围，引入路径代价函数实现能量的高效利用。
By controlling diffusion of exploratory messages and making use of cost function, the energy consumption can be more efficient in free space model.
一旦真相已毁，稗史就有扩散的自由。
When the reality was destroyed, the legend had freedom to expand .
根据不同的跃迁运动和自由扩散运动模型导出了魔角旋转条件下的平均谱密度函数。
The average spectral density functions under MAS condition were derived from various models of jump motion and models of freely diffusive motion.
采用自由空间模型，通过最佳跳数值控制探测数据的扩散范围，增强能量的高效利用。
By controlling the diffusion of exploratory message with optimal hops in free space model, the energy consumption can be more efficient.
以线性扩散波方程在自由下边界条件下的解析解为例，利用遗传算法来确定扩散波方程的参数。
The paper demonstrated the method for solving the parameters of the linear diffusive wave equation under free downstream condition by using genetic algorithms.
结果表明：无论是注入离子本身的射程，还是次级电子、自由基扩散、高温热穗、级联原子和冲击波等次级作用范围都无法触及表皮下面的胚细胞。
The results show that no matter the range of the implanted ion itself or secondary effect sphere of secondary electrons, radical diffusion, thermal spike, cascade atoms and shock wave etc.
分析了模拟氯盐环境中混凝土内部的自由氯离子浓度分布规律，即氯离子的扩散行为。
The free chloride concentration distributing in concrete of simulant chloride environment is analyzed, that is chloride diffusion behavior.
在自由体积扩散理论的基础上，提出了渗透蒸发过程中二元水溶液在聚合物膜中扩散的修正自由体积模型。
A modified free - volume diffusion model for binary aqueous mixtures in pervaporation was developed on the basis of free -volume diffusion theory.
本文对处理自由表面的VOF法进行了改进，减轻了由“施主-受主”法导致的假扩散现象。
The VOF method is modified to lighten artificial diffusing which results from "Donor-Acceptor"method.
在美洲，北美自由贸易区的正在向整个拉美地区扩散，有望于2005年底建立美洲自由贸易区。
The Free Trade Area of America (FTAA) is expected to come to birth by the end of 2005.
以自行研制的煤对氧扩散特性测试装置为实验手段，在常温环境条件下测试了不同粒度松散煤体对氧的自由扩散特性。
With special device manufactured by ourselves, the free diffusing characteristics of oxygen in different granularity coal are tested under normal temperature condition.
然而，大部分扩散相关的NMR研究仅局限于简单体系的自由扩散行为。
However, most of the diffusion-related NMR studies were limited to the free diffusion in simple systems.
金属中自旋翻转散射长度远长于电子平均自由程，近来关于自旋翻转散射效应的研究主要集中于扩散区域。
Because the spin-flip length is longer than the electron mean-free-path in a metal, past studies of spin-flip scattering were limited to the diffusive regime.
金属中自旋翻转散射长度远长于电子平均自由程，近来关于自旋翻转散射效应的研究主要集中于扩散区域。
Because the spin-flip length is longer than the electron mean-free-path in a metal, past studies of spin-flip scattering were limited to the diffusive regime.
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