Moreover, investigated the relation among the P wave velocity, the micro-crack in rock with the variation of core diameter.
探讨了岩石的微观裂隙、超声波速度与岩芯变形之间的关系。
For the tight sandstone containing gas, only velocity ratio of P wave to s wave and Poisson ratio are sensitive to fluid variation.
而对于致密含气砂岩，纵、横波速度比及泊松比对流体变化相对较为敏感。
And the velocity of slow compressional-wave (P-wave) is in direct proportion to the porosity and the density of fluid.
而慢纵波的速度则和孔隙度和流体的密度成正比。
According to the properties of wave propagation in multiphase medium, the theoretical formulas for calculating the P-wave and S-wave velocity are deduced.
本文基于多相复合介质的波动传播特性，导出介质内纵、横波速的理论计算公式。
The assumption is made that P-wave velocity, S-wave velocity, density and Q factor show lateral piecewise linear continuous variations in block media.
假定介质为块状，且块中纵，横波速度及密度、品质因数横向分段线性连续变化。
The result is applied to analysis of velocity and stacking of the P-SV converted-wave.
将这一结果应用于P-SV转换波的速度分析和叠加处理中。
The basic field data are P-wave velocity values collected along a seismic profile conducted in the Bozhong Depression.
我们收集了渤中凹陷一条剖面的纵波速度资料。
Theoretically, the velocity of a P wave can be calculated.
纵波的速度是可以计算出来的。
The paper recommended two methods for velocity analysis in VTI medium: non-hyperbolic P-wave velocity analysis and template method, which achieved practical and stable effects.
文中推荐VTI介质P波非双曲线速度分析及量板法两种方法，得到了较为实用、稳定的结果。
The results show that the deep substance may uprise in this area, so the distribution of P-wave velocity, Q value distribution and VP/VS distribution are closely related to seismicity in this area.
结果表明在该地区很可能存在深层物质上升，从而表现出地震活动与P波速度场、Q值分布和VP/VS分布的相关性。
The intrinsic frequency of P-wave increases because of existence of apparatus and its amplitude has been influenced by velocity ratio of P-wave vs S-wave.
纵波的固有频率因仪器的存在而增大，纵波幅度还受地层的纵、横波速度比的影响。
Meanwhile, it is also observed that the regions of negative anomalous P-wave velocity are enlarged by steps as the central loading is increased.
同时还观测到，P波速度负异常区随中心压力增加逐步扩大。
However, the velocity of S-wave in a rock block with a large plane can be measured with the probes for P-wave.
对具有较大平面的岩块，可以利用纵波探头测定横波速度。
There are a lot of mode wave patterns near P-wave velocity line in 2-D spectrum, which have dense special distribution and large amplitude when the radial thickness of model well is thicker ;
当模型井的径向厚度较大时，二维谱中纵波速度线附近的模式波类型较多，空间分布较密集，幅度也较大；
Get consistent rock parameters: P-wave velocity, porosity, and mineral properties of sands, fluid modulus and density.
获取一致的岩石参数：P波速度，孔隙度和砂体的矿物特性，流体模量和密度。
Rock P-wave velocity as a key mark of rock quality can reflect the state of rock body quality in the dam site area.
岩体波速作为反应岩体质量的重要指标，可以反应坝址区岩体质量状况。
Rock P-wave velocity as a key mark of rock quality can reflect the state of rock body quality in the dam site area.
岩体波速作为反应岩体质量的重要指标，可以反应坝址区岩体质量状况。
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