The sand in the bags has the principal task of guaranteeing continuity of contact in the material without impeding the free diffusion of the compressed air.

However, most of the diffusion-related NMR studies were limited to the free diffusion in simple systems.

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。

The growth and maintenance of solid tumors is angiogenesis dependent, including colorectal cancer, The growth of new blood vessels provides nutrients and a means of eliminating metabolic waste products by a process other than simple diffusion.

包括大肠癌在内的实体肿瘤的生长和转移是血管依赖性的，肿瘤通过自身新生的血管为其提供营养，排泄代谢产物，而不能单靠物理扩散。

METHODS Measure the cumulative amount of papaverine from five gels containing different penetration enhancers by using simple diffusion mini cell and UV spectrophotometry.

方法：采用简单扩散小室，用紫外分光光度测定了5种处方罂粟碱凝胶离体鼠皮透皮吸收药量。

TGA analysis revealed that β-estradiol could load into mesoporous silica nanoparticles via simple diffusion equilibrium.

TGA分析显示β-雌二醇通过简单的扩散平衡可以负载到介孔硅中。

In the past, water molecules through the cell membrane lipid bilayer were generally considered a simple diffusion process.

在过去，人们普遍认为水分子通过细胞膜脂质双分子层是一一个单纯的扩散过程。

Results of the simple diffusion test may provide a basis for correction of results obtained by electro-migration methods.

电加速试验结果应根据自然扩散试验进行修正。

However, under these circumstances cholinesterase would enter the saliva by simple diffusion and therefore activity should be correlated with salivary flow rate.

在这样的情况下乙酰胆碱酯酶将以简单扩散的方式进入唾液，因此它的活性必将和唾液流量速率相关。

In the physical condition, the water pass the member through the simple diffusion and rapid transport.

生理情况下，水通过细胞膜包括磷脂双层的简单扩散和通过特殊跨膜转运蛋白的快速转运两个过程。

Diffusion coating on calorized steel and mechanical properties of its weld joints

GL渗铝钢渗层特征及其对焊接接头机械性能的影响

Tribological property of TiN diffusion coating in-situ synthesised on titanium alloy surface

钛合金表面原位合成TiN渗镀层摩擦性能研究

The Method of Metal Diffusion Coating by Means of Precipitation in Gas Phase through High Pressure Deaeration

高压排气气相沉积渗金属

Analysis on kinetics of carbide diffusion coating

碳化物覆层扩散处理动力学的解析

Silicon Diffusion Coating on Steel by Chemical Vapor Deposition of SiH_4

硅烷CVD法在钢基体表面生成硅扩散涂层

Especially, a method of Al diffusion coating has been developed in recent years.

特别值得一提的是，最近几年来发展起来的一种新型的用扩散的方法在镁合金表面制备铝涂层的技术。

Effect of carbon activity in matrix on dynamics of carbide diffusion coating

钢中碳活度对碳化物覆层扩散处理动力学的影响

The Mathematical Description of Mass Diffusion Coefficient at Interference Fringes Maximum Point

斑纹切位变干涉测定基于干涉条纹极值点质扩散系数的数学描述

Characteristics of Freeze drying under the Mass Diffusion Control

质量传递控制下的冻干特性研究

The model with plant cell as a basic unit considered the mass diffusion and bulk flow of each constituent with the tissue during the osmotic dehydration.

模型以植物细胞为传输过程的基本单元，考虑了各组分在细胞内、细胞外、通过细胞膜及胞间连丝的质量扩散，和由于体积收缩而导致的集流传输。

Mass diffusion lattice-Boltzmann model and simulations

质量扩散格子Boltzmann模型及数值模拟

The main natures of the diffusion are universality, inevitability, non-linear and other properties. The main diffusion approaches are string diffusion, radiation diffusion, polymer diffusion, reverse diffusion feature and so on. 3.

气象灾害风险扩散的主要方式有串型、辐射型、聚合型、逆向型等几种，具有普遍性、必然性、非线性等特征。3、研究揭示了气象灾害风险的扩散机制。