The amount of time for a wave to travel a certain distance, proportional to the reciprocal of velocity, typically measured in microseconds per foot by an acoustic log and symbolized by tor DT.
波在某段距离传播的时间，与速度的倒数成正比，在声测井中，以每英尺多少毫秒来量度，用符号t或DT表示。
The rock acoustic parameters in this paper include wave amplitude, spectral amplitude, spectral area, spectral density, wave velocity and attenuation coefficient etc.
这些岩石声学参数为波幅、谱幅、谱面积、谱密度、波速度、衰减系数等。
The experiments also showed that the effect of thermal cracking on wave velocity is related closely with that on acoustic emission discovered by other authors.
实验同时表明岩石热开裂的波速效应，与过去被其他作者发现的热开裂声发射效应之间有着密切的关系。
This paper is to display existence and its conditions to a surface acoustic wave propogating along surface of a half-body of piezoelectric ceramics with a rotation of constant angular velocity.
对转动半无限压电陶瓷体的表面声波给出了存在性证明及其条件。
Based on the acoustic wave sounding of the dam foundation of a water control project, the continuous ratio of J1~J4 inter layer shear zone is infered by analyzing the acoustic velocity anomaly.
以某水利枢纽工程坝基声波探测为例 ，通过声速异常分析 ，对J1～J4层间剪切带连续率进行了推定 ，其部分成果经开挖验证具有一定的可靠性。
Based on the acoustic wave sounding of the dam foundation of a water control project, the continuous ratio of J1~J4 inter layer shear zone is infered by analyzing the acoustic velocity anomaly.
以某水利枢纽工程坝基声波探测为例 ，通过声速异常分析 ，对J1～J4层间剪切带连续率进行了推定 ，其部分成果经开挖验证具有一定的可靠性。
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