reciprocal velocity log 速度倒数测井
pseudo velocity log 拟速度测井曲线
doppler velocity log 多普勒计程仪 ; 多普勒测速声纳
acoustic velocity log tool 声速测井仪
correlation velocity log 相关的速度纪录
It is an effective way in integrated navigation by using Strapdown Inertial navigation System (SINS), GPS and Doppler Velocity Log (DVL).
利用捷联惯导(SINS)、GPS定位系统和多普勒计程仪(DVL)进行组合导航是水下运载器导航定位的有效方式。
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。
Although the seismic log and VSP velocity are accuracy, but determined velocity data of Wells on sections are little and insufficient to control the horizontal change of velocity.
地震测井和VSP测定的速度精度较高，但剖面上的井测定的速度资料很少，不足以控制速度的横向变化。
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