pressure diffusion

The three-dimensional numerical model for a single plane fissure grouting was established. By using time-dependent viscosity constitutive equation, the transient law of grout diffusion behavior, pressure field and velocity field was researched.

建立了单一平板裂隙浆液扩散的三维数值模型，采用粘度时变本构方程，研究了浆液扩散形态、压力场和速度场分布、地下水流量的瞬态规律。

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Based on momentum conservation principle and conversation of energy, the calculating formulas for outlet pressure of throat, delivery pressure of gas lift jet pump and correlative size of diffusion channel are achieved.

根据喉管内流体动量守恒和扩散器内能量平衡原理导出喉道出口压力和加速泵排出压力的计算公式，并计算直接影响加速泵排出口压力的扩散器尺寸。

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These factors include magma composition, convection, diffusion, thermal gradient, oxygen fugacity, temperature, pressure, the shape of magma chamber etc.

影响韵律形成的因素很多，通常包括岩浆成分、对流作用、扩散作用、热梯度、氧逸度、温度和压力等。

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The processes of permeation and diffusion of hydrogen in Ti and Ti alloys can be described into three styles: the hydrogen permeating into Ti matrix and dissolved from and titanium hydride diffuses into Ti matrix under a hydrogen pressure;

氢在钛中的扩散渗透进程分为3种模式，一是渗入钛基体中的氢与钛氢化合物自身分解的氢在氢压的推动作用下在钛基体内扩散；

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As the same vacuum degree of the condenser throat, the higher pressure diffusion capability would result in the lower pressure at the outlet of the last stage. And there will be more enthalpy that can be used by the stream turbine.

在凝汽器喉部真空度一定的情况下，低压排汽缸的扩压能力越强，汽轮机透平末级出口处的静压就越低，机组的可配置焓降就会越高。

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These properties include vapor-liquid and critical properties, constant pressure heat capacity, thermal expansivity and isothermal compressibility, transport properties as viscosity, self-diffusion coefficient and thermal conductivity, and liquid density and viscosity of binary mixture.

这些热力学性质包括气液相平衡及临界性质，恒压热容，热涨系数，压缩系数，传递性质如剪切粘度、扩散系数、热传导系数等，以及二元混合物的密度和粘度。

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By means of the model, the effect of factors on the kinetic of UN formation was studied, such as temperature, initial ratio of C/ UO2, chemical reaction rate coefficient, nitrogen pressure and stream flowing rate, diffusion of carbon, nitrogen and CO.

利用提出的模型，定性分析了温度、混料比C/UO2、化学反应速率、氮气压力及流速、C/N/CO扩散速率等对整个制备过程动力学的影响。

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Turbulent energy is transported by convection, turbulent diffusion and pressure diffusion.

湍能主要是通过对流、湍流扩散和压力扩散进行输运；

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The methane combustion and reforming occured in the high pressure-temperature reformer is a typical confined diffusion flame.

甲烷和氧气在高温高压重整炉中的反应是一类典型的受限扩散射流火焰。

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The SiC/ Al laminated graded composites were fabricated by vacuum hot-pressure method, and the effective joining among the composites of different volume fraction of SiC particles was realized by heat diffusion pressure.

用真空热压法制备了SiC Al层状梯度复合材料；采用热压扩散工艺，实现了不同SiC含量的复合材料间的有效连接。

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