ray velocity surface 光线速度面
equation of the ray velocity 光线速度方程
variant velocity ray-tracing depth migration 射线变速深度偏移
Ray path sound velocity 射线路径声速
The radio wave propagation velocity is slowed and the ray producing bend but to the asymmetry of the atmospheric medium, the refraction error is produced.
由于空中大气介质的不均匀性使得电波传播速度减慢射线产生弯曲，从而产生折射误差。
Flash X-ray machines have been used as tools for studies of detonation physics and high velocity motion process.
闪光x射线机是研究爆轰物理过程及其它高速瞬变过程的重要工具。
A rapid and accurate method for two point ray tracing in horizontally layered velocity model is presented in this paper.
提出了一种快速准确的水平层状介质中两点间的射线追踪方法。
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