... distance by engine's RPH 主机[每时转数计]航程 distance by log测程仪航程 distance by vertical angle 垂直角距离 ...
双语例句
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This paper constructs a new practical distance learning system that is low cost and high speed by the means of satellite LOG combining with ground connection well.
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.