For the P-SV wave travel time, it also can be expressed exactly by a three-term Taylor series in short or moderate spreads.

SV波的传播时间也可用三项泰勒展式表达，在中等及短排列长度时可达到一定精度。

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Using the data of natural earthquakes, we have studied the characteristics of P-wave travel time in Qinghai-Xizang plateau and its vicinity.

本文利用天然地震资料，研究了青藏高原及其邻区的P波走时特征。

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The problem of the seismic wave travel path in the nonhomogeneous medium is often mentioned in seismic sequence analysis by means of rapid ray tracing.

在地震层析研究中，常常涉及地震波在非均匀介质中的传播路径问题，故快速射线追踪是不可缺少的工具。

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How far can this 4th wave travel?

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There is a reasonably good chance that the third wave higher will travel noticeably higher than the end of the first wave.

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Saltwater crocodiles enjoy catching a wave and can travel hundreds of kilometres by "surfing" on ocean currents, a study suggests.

BBC: Crocodiles 'surf' long distance on ocean currents