Studying of Helium mass-spectrometer leak detector with back diffusion

At the same time electro-osmotic drag, back diffusion, hydraulic permeation and net water transport coefficients and water content in the membrane increased rapidly, while proton transport resistance decreased, which improved the performance of PEM fuel cells.

增大电池的操作压力，电渗拉力系数、反扩散系数、水力渗透系数、水净迁移系数和质子膜的含水量增加，而质子传递阻力下降，使燃料电池的性能得到了提高。

A study on horizontal eddy diffusion in the surface water of the northeastern South China Sea Based on~ ( 228) ra tracer

南海东北部表层水体水平涡动扩散的~（228）Ra示踪研究

It has been analysed that liquid flow pattern and liquid crosswise eddy diffusion influence on efficiency of bubble tray.

本文分析了液相流动形态及液相横向扩散对鼓泡型塔板板效率的影响。

This cause serious pollution problems because mass is transferred less rapidly by molecular diffusion than by eddy diffusion.

这些引起了严重的污染问题，因为通过分子扩散的传质比涡流扩散的要慢。

In general, however, there is a big limitation on growth of productive forces and economy by a technological innovation itself. Only with technological innovation diffusion, the potential economic benefits would be maximized.

然而，一项技术创新本身对社会经济的影响和社会生产力的提高存在一定的局限性，只有借助于扩散，技术创新的经济效益才能最大限度地发挥出来。

The results show that the value of diffusion and absorption potential ( E da) increases when the ratio of formation water salinity to mud salinity ( C w/ C m) increases.

结果表明：（1）扩散吸附电位Eda随地层水矿化度与泥浆滤液矿化度比值（Cw/Cm）的增大而增大。

The Effect of the Neutron Skin and the Neutron Distribution Diffusion on Nuclear Potential

中子皮及中子分布弥散度对核势的影响

Only by way of diffusion its potential economic benefit can be realized to enhance economic system evolution and upgrading.

但是一项技术创新本身，对经济的影响和社会生产力的提高是有限的，只有通过扩散才能充分发挥其潜在的经济效益，从而促进技术经济系统进化和高级化。

The calculated results by this model agreed well with chloride profile obtained from concrete samples in situ. With finite element method, influences of binding, diffusion potential and capillary action on chloride transport were conducted.

采用有限元方法等分析了结合作用、扩散电场以及毛细作用对氯离子运移过程的影响。

ET was equal to the difference between the open-circuit potential of the occluded cell and the diffusion potential of the occluded solution into the bulk.

E T在数值上等于闭塞区开路电位与内外溶液间扩散电位之差。

This potential consists of the Donnan potential on two sides and diffusion potential in membrane phase.

该电位包括膜两侧的Donnan电位和膜相中的扩散电位。

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；

The Intelligent Diffusion Silicon Pressure Transmitter Based on HART Protocol

基于HART协议的智能扩散硅压力变送器

FMECA Analysis of the Technology Process of Diffusion Silicon Pressure Transducer

扩散硅压力传感器工艺过程的FMECA分析

Modeling the Stress Calculation of the Diffusion Silicon Pressure Sensor

扩散硅压力传感器应力计算建模

Automatic Test and Compensation System Design of Diffusion Silicon Pressure Sensor

扩散硅压力传感器自动测试补偿系统设计

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。

A silicon diffusion pressure sensor is used to measure vacuum degree of chuck table to ensure that wafer is firmly chucked during grinding.

真空吸盘真空度的测量使用扩散硅压力传感器，实时测量出真空度的大小，保证硅片在加工过程中可靠夹紧。

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；

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。