free diffusion

Rogers , E . M. ( 1983 ) . Diffusion of innovations ( 3 rd ed ). New York : The Free Press.

罗世宏 ( 1992 ). 《传播理论—源起、方法与应用》. 台北:时英出版社.

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 analysis of migration and accumulation conditions indicates that methane gas migration is a comprehensive fashion composed of fault filtration and free diffusion differentiation, and there are three methane gas sources: ① gas that directly releases from gaseous hydrocarbon in the deep fault path;

表层沉积物所含甲烷气为断层渗逸-自由扩散作用双重运移结果，主要有3种来源：（1）直接来自于下部断层通道中气态烃的释放；

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.

袋中砂的主要目的是在保证材料的连续接触而不妨碍压缩空气的自由扩散。

At the same flow rate of ethanol, flame length and flame width of confined jet diffusion flame were all smaller than that of free jet diffusion flame.

结果表明，自由射流扩散火焰呈椭球状，受限射流扩散火焰呈圆锥状。

Covered the porous membrane in the evaporation pipe, the diffusion processes divided into two parts, one for free diffusion into the free gas. the other for a period of diffusion into porous membrane.

即在蒸发管管口粘覆被测多孔介质，将扩散质组分通过扩散组分的扩散分为两段，一段为通过静止气体的自由扩散，另一段为通过多孔介质的扩散。