The peak pressure attenuation of shock in water in borehole axis direction was slower than the direction vertical to the borehole axis.
水中冲击波压力峰值在炮孔轴线上衰减比垂直于炮孔轴线向上衰减慢。
The experiment showed that in the melon slices there were some points where the sound pressure attenuation coefficient were negative value or zero.
实验表明额隆内有若干点声衰减为负值及零值、意味着声波沿这些点传输时、声压非但不减小反而增大了。
An exploration of axle centre pressure attenuation rule proves that the effective injection distance is 9~15 times as much as the diameter of nozzle entry.
对轴心压力衰减规律的探索，证明其有效喷距为喷嘴入口直径的9～15倍；
The threshold pressure gradient of low permeability sandstone was studied experimentally by measuring the pressure attenuation in an unsteady seepage flow.
为了研究低渗透砂岩的启动压力梯度，设计了一种非稳态渗流中测量压力的试验方法。
Through typical engineering examples the extrusion of soil between piles or over top of pile and the pressure attenuation of anchoring cables in the stabilization of landslide are studied herein.
本文对土体滑坡和松散层滑坡治理过程中容易出现的冒顶剪出、桩间土挤出和锚索预应力衰减等三方面的问题，结合典型的工程实例进行分析探讨。
Attenuation of wave amplitude of reservoir rock at simulated high temperature and pressure is measured with spectrum-amplitude comparison mediod in laboratory.
在实验室内用频谱振幅比较法模拟测试了储集层岩石在高温高压下的弹性波振幅衰减值。
Attenuation of elastic wave amplitude in rock is affected by its temperature and pressure, filled fluid properties, fluid saturation, rock composition and structure, etc.
弹性波振幅在岩石中的衰减程度受其温压、所含流体性质、流体饱和度、岩石组分、结构等因素的影响。
The theory and experiment verifies that it is a good pulsating attenuator and has large attenuation amplitude and wide attenuation band to pressure pulsation of oil source.
理论及试验证实它对油源压力脉动衰减幅度大，衰减频带宽，是一种性能良好的脉动衰减器。
The attenuation of the sound waves leads to a negative exponent pressure gradient.
随着波长的增大或介质黏度的减小，声波的衰减减缓，压力梯度越小。
This paper analyzed and researched the mostly invalidation form that pressure vessel will attenuation and leak out or break depend on cauterization.
压力容器在受腐蚀的情况下会逐渐变薄、漏或破裂，针对这种主要失效形式进行分析和研究。
Based on the principle of sound attenuation to measure the sediment concentration of suspensions, the attenuation value of sound pressure must be detected.
基于声衰减原理进行水体含沙量测量的方法，需要测量声压的衰减值。
Results show that the mezzanine foam has a very good blast-wave attenuation function, and this attenuation function increases with the input pressure force increase.
结果表明：泡沫夹层对爆炸冲击波具有很好的衰减作用，且这种衰减作用随输入压力的增大而增大。
Experimental investigation was carried out to study the pressure wave speed and its attenuation for gas-liquid bubbly flow in vertical upward tube.
研究了垂直上升管内气液两相泡状流压力波的传播速度和衰减规律。
During the development, the production of producers is affected by many factors, such as the attenuation of formation energy, pressure sensitive effect and the attenuation of fracture flow capacity.
对于异常高压特低渗透压敏油藏注水开发困难，一般采用人工压裂依靠天然能量开发，开发过程中油井产量受地层能量衰减、压敏效应以及裂缝导流能力衰减等因素的影响。
During the development, the production of producers is affected by many factors, such as the attenuation of formation energy, pressure sensitive effect and the attenuation of fracture flow capacity.
对于异常高压特低渗透压敏油藏注水开发困难，一般采用人工压裂依靠天然能量开发，开发过程中油井产量受地层能量衰减、压敏效应以及裂缝导流能力衰减等因素的影响。
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