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1 This result showed that effective pressure was quite obvious when the liquid was moving in low permeating and porous medium.

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

3 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.

4 In spray region, the effective pressure drop is mainly dependent on the static pressure drop due to liquid holdup on the tray, its value is not affected by hole gas velocity.

5 It takes an effective pressure test through large-scale simulation in mobile services.

6 With increasing of effective pressure, permeability declines gradually and porosity decreases according to the exponentail relations.

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

8 Relationship between permeability and effective pressure is scaled and the effect of effective pressure on two-phase porous flow during reservoir development is analyzed.

9 However, at the fixed effective pressure level, the effect of temperature on the porosity of sandstone is very small.

10 According to the K . Terzaghi's effective pressure principle , analyses the reinforcing mechanism of vacuum and surcharge precompression for soft foundations.

11 Therefore, finding a economical and effective pressure relief method to prevent rock burst became a important subject of mine disaster reduction.

12 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.

13 The results show that standard deviation and coefficient of variation of indicated mean effective pressure are the best parameters.

14 The calculation method of primary wave and second wave speed were studied when the oil saturation and effective pressure of unconsolidated sandstone reservoir with high porosity in X Oilfield changed.

15 After analyzing the limitation of the traditional pore pressure prediction methods,(www.Sentencedict.com) a new method based on the effective pressure theorem and the acoustic velocity model was proposed.

16 The model makes it possible to calculate the macroscopic behaviors of the two-fluid flow, such as effective pressure, effective viscosity and shear viscosity of particle phase.

17 Experiments show that the velocity of sonic waves is sensitive to pore fluid in sediments of weakly cemented or low effective pressure.

18 Low permeating and porous medium was taken as an object for study, it can be educed from the experiment that the curve of permeability changed with the effective pressure.

19 The regular permeability is a variable relating to driving pressure difference and effective pressure.

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

21 SmartFire system reduces engine roughness ( reduces fluctuations in cylinder pressure and mean effective pressure ).

22 The traditional dilatancy equation of Cam-clay model was modified and the relativity between the phase transformation stress ratio and initial effective pressure was considered.

23 Relations between permeability and fluid pressure based on different effective pressure law are established.

24 Then, the normal working parameters of this engine can be simulated, such as the compression pressure, maximum combustion gas pressure, and effective pressure and so on.