By experimental data analysis, the random change of the reciprocal induction time as well as the induction time is in conformity to logarithmic normal distribution.
实验数据分析表明，诱导时间的倒数的随机变化规律服从对数正态分布。同样，诱导时间亦服从对数正态分布。
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 reflection of thin layer may lead to frequency notch and the reciprocal of notch cycle is equal to the time thickness of thin layer.
薄层反射在频率域会出现陷频现象，其陷频周期的倒数等于薄层的时间厚度。
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