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
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。
Observational evidence for stellar winds obtained from radio, infrared, visible, UV and X-ray regions are given. And two important parameters, terminal velocity and mass loss rate, are discussed.
在观测方面，给出了从射电、红外，可见光、紫外和X射线各波段得到的观测证据，并介绍了星风的两个重要参数、星风的终速和质量损失率。
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