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 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。
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