有效压力

应用MATLAB计算机语言绘制多功能空气幕各理论模型的三维图形，模拟分析空气幕的有效压力及引射风量随其它因素变化的特性。

Three-dimension figures of all the theoretical models of multi-function air curtain were drawn by MATLAB , and characteristics of air curtain effective pressure and ejecting wind volume were analyzed with the changing of other factors . 3 .

介质的各向异性、孔隙率、流体饱和度及有效压力等是影响地震波振幅随炮检距变化（AVO）的重要因素。

The anisotropy , porosity , fluid saturation and effective pressure are the significant factors which effect on amplitude variation with offset ( AVO ) of seismic wave in the medium .

随着上覆有效压力（p）的增大，时差与孔隙度的线性相关程度减弱，说明Wyllie时间平均方程在较低压力范围内敏感；

With the increase of overlying effective pressure ( p ), the linear correlation between stepout and porosity declines , which shows that Wyllie time average equation is sensitive in the low-pressure range .

结果表明，柴油机采用EGR后，由于废气的引入，使柴油机的平均有效压力、输出功率和有效热效率随着EGR率的增加而降低。

The results showed that when EGR ratio was increased , an associated consequence of it was the reduction in the mean effective pressure , power output and thermal efficiency of the engine .

在TFE有效压力范围内，尼龙以前被广泛的使用，因为尼龙具有抗永久性变形（或蠕变）的能力，并且在负载后能够自行恢复。

Nylon is predominantly used past the useful pressure range of TFE because of its ability to resist permanent deformation ( or creep ), and recovery after load .

数值模拟了油藏含油饱和度与有效压力变化时移地震AVO的响应，确定利用时移地震AVO区分油藏参数的变化、实现油藏定量解释的可行性。

The seismic responses caused by different reservoir parameter variations are numerically simulated , and then the feasibility of discriminating different reservoir parameters and realizing quantitative interpretation using the time_lapse seismic AVO technique is determined .

数据试验表明，文中推导的多波时移地震AVO方程能较好地反演油藏含油饱和度变化和有效压力变化，实现油藏定量解释。

The simulated data experiment shows that the time_lapse seismic AVO inversion is feasible , and the formula derived in this paper is effective to discriminate changes of oil saturation and effective pressure , and to improve the precision of time-lapse seismic interpretation .

实时性能对于成功的自动标定执行来说是非常关键的。通常这会用燃烧参数例如爆震，CA50或者平均有效压力以用于闭环控制。

Real-time performance is critical to the successful implementation of automated mapping processes , which typically use combustion parameters such as knock , CA50 or IMEP for closed loop control .

高平均有效压力增压柴油机&一种泄压储能系统的研究

A Study on Supercharged Diesel Engine with High Brake Mean Effective Pressure

和有效压力不同，单轴压力会引起岩石弹性波速度的各向异性。

Unlike the effective pressure , mono-axis pressure will cause velocity anisotropy .

带肋变截面回转通道内沿程有效压力分布特性的实验研究

An Experimental Study of Efficient Pressure Distribution in a Turn-Over Channel with Ribs

有效压力对低渗透变形介质油藏物性的影响

Influence of effective pressure on the physical property in low permeability deformation reservoir

有效压力对低渗透多孔介质孔隙度、渗透率的影响

The effect of effective pressure on porosity and permeability of low permeability porous media

热应力作用下的有效压力对多孔介质渗透系数的影响

Influence of effective stress on the coefficient of permeability of porous medium under thermal stress

在不同有效压力情况下测试了岩石的超声波纵横波速度，分析了有效压力对岩石速度的影响。

The effect of different effective pressures on compressional and shear wave velocities were analyzed .

中小型柴油机简谐力矩幅值与平均有效压力也呈3次方关系。

Small Diesel Engine torque harmonic amplitude and mean effective pressure was between 3 powers .

狄塞尔平均有效压力

Dissel mean effective pressure

在考虑初始有效压力情况下对岩石的应力敏感性的分析表明，储层的物性参数（如孔隙度和渗透率等）仍然随着有效压力的增加而逐渐降低，并满足负指数衰减规律。

After the primitive effective-stress be considered , the law of stress sensitivity still follow the negative exponential attenuation .

而在有效压力恢复过程中，渗透率不能恢复到原来大小，即应力敏感对渗透率的伤害具有永久性。

But the permeability can not restore by descend the effective stress , so the hurt for permeability is permanence .

结果表明：发动机转速和平均有效压力对污染物排放有较大影响；

The results show that the engine speed and brake mean effective pressure ( BMEP ) have great influences on emissions .

这个最佳拟合经验关系式描述了有效压力、孔隙度、渗透率和岩石密度对声波时差的综合影响。

This formula describes the integrated influence of effective pressure , porosity , permeability and rock density on the acoustic travel-time differences .

然后计算出列车与声屏障在几种不同工况下，声屏障所受的有效压力，并且总结出声屏障在这些不同工况下的受力特征以及最大有效正压力的经验公式。

And the empirical formulas are concluded for the loading properties and maximum effective pressure of the sound barriers under different working conditions .

在煤层气开发过程中，随着储层压力下降，有效压力增加，煤储层渗透率下降。

During the exploitation process of the coal-seam gas , with the seam pressure decreasing and the effective pressure increasing , the coal-seam permeability declines .

增压中冷柴油机的平均有效压力（或增压度）越高，则其工作过程对环境温度越敏感；就这类柴油机而言，环境温度主要是通过增压压力的变化来影响气缸内工作过程。

As far as turbocharged diesel engine with intercooling is concerned , the ambient temperature influences the engine working process mainly through the supercharging pressure variation ;

本文以有效压力平衡原理为基础，对空气幕需风量、动压功率与其它参数之间的关系进行了分析并给出了具体表达式。

Based on the effective pressure equilibrium principle , two formulae to calculate the discharge volume and the velocity pressure power of air curtains are presented .

结果表明：通道出口段存在气膜出流与无气膜出流情况相比出口段有效压力分布发生变化，并且使整个通道的流阻下降。

Experimental results showed that the effective pressure distribution of the exit section was different and the flow friction decreased due to the influence of film bleeding .

有效压力系统是宏观动力能共同作用于煤储层而形成的压力体系，是联系煤储层地层能量与煤层气成藏的桥梁和纽带。

Effectual stress system , as the bridge of relating stratum energy and CBM reservoir formation , is formed by macroscopical dynamical energies which act on coal-bed .

孔隙度直接定量测量的可信度取决于取心所得地层的岩样。低渗透气藏岩心的孔隙度随有效压力的增大呈指数关系递减。

For direct quantitative measurement of porosity , reliance must be placed on formation samples obtained by coring . Stress sensitivity has relationship with water saturation of reservoirs .

本文针对岩石的弹性波速度与围限压力和孔隙压力的关系，澄清了有效压力的概念和计算公式。

In the light of the relation between rock velocities and confining pressure and pore pressure , the concept and formula of effective pressure is cleared in this thesis .

根据大量的实验资料，本文分析了砂岩样品的纵横波速度和有效压力的关系，对实验结果进行了回归分析，并用裂隙闭合理论进行了解释。

On the base of large experimental data set , the influence of effective pressure on rock velocities is analyzed with regression method and the theory of crack closure .