讨论了20钢高温时效组织与超声波速度间的相关性。
The correlation between ultrasonic velocity and microstructure in 20g aged at high temperature is discussed.
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。
Moreover, investigated the relation among the P wave velocity, the micro-crack in rock with the variation of core diameter.
此外还分析了高岭土结构特性对声波速度及动力学参数的影响。
In addition, the influence of structural property of kaolinite to wave velocities and dynamic mechanical parameters are analysed.
本文提出了一种相位干涉法。用来测量表面声波速度的相对变化。
A phase interference method, for measurement of the relative change of surface acoustic wave velocities, is presented.
对25个样本的试验结果表明，以声波速度下降指数评定混凝土构件质量是可行的。
The testings of 25 samples have shown that it is feasible to use ultrasonic speed reduction index to evaluate the quality of concrete structures.
几年来的现场应用实跋，也说明声波速度法评定混凝土构件质量是一种简便易行的科学方法。
The field applications fo the last few years also indicate the method of ultrasonic speed is a simple and easy way to assess the quality of concrete structures.
本文报道了一种基于脉冲回波相位谱的超声波速度测量方法，并给出了它的详细理论推导过程。
This paper presents the development of a pulse-echo measurement method, based on the use of a phase spectrum to determine the ultrasonic wave velocity. A detailed descripsion of the theory is given.
在假定岩石体积模量是其上、下限值线性加权平均值的条件下，提出了泥质岩石油气层声波速度校正法。
And a correction method for acoustic logs from shaly sand is also proposed assuming that the bulk modulus of the rock is the linear weighted averages of its upper and lower limits.
试验结果表明，超声波速度、岩样的强度以及破坏形式具有明显的方向性，而平均杨氏模量随方向的变化不很显著。
The experimental result shows that the ultrasonic waves speed, strength and destroy type is different to rock direction, but the aver- age modulus is the same.
在分析地层孔隙压力预测传统方法局限性的基础上，提出了一种基于有效应力定理和声波速度模型的地层孔隙压力预测方法。
After analyzing the limitation of the traditional pore pressure prediction methods, a new method based on the effective pressure theorem and the acoustic velocity model was proposed.
我们用MTS的超声波测试系统研究了地表岩样饱和水及孔隙压力对纵横波速度的影响。
Using MTS Ultrasonic Measurement System, we studied the influences of water of saturation and pore pressure on velocities of compressional (P) and shear (S) waves in exposure rock specimens.
提取出其中的纵波、横波速度信息，并与实验室岩心声波测量结果和测井结果进行了对比。
With the measured P and S wave velocities and log-derived densities of the same interval, rock mechanical parameters of this pre-borehole are roughly calculated.
提取出其中的纵波、横波速度信息，并与实验室岩心声波测量结果和测井结果进行了对比。
With the measured P and S wave velocities and log-derived densities of the same interval, rock mechanical parameters of this pre-borehole are roughly calculated.
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