In this paper, the interaction between a cw plane wave and a plane pulse travelling with sound speed is considered. Both of them satisfy the homogeneous wave equation.

本文讨论一列平面波与一列平面行波脉冲的声相互作用，显然这两个波不仅都满足波动方程，而且可以用来讨论公共区之外的声散射声问题。

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The equalizer is used in high-power travelling wave tube usually works in bad environment, for example, a wide rage of temperature.

大功率行波管用均衡器通常工作环境恶劣，需要满足在高、低温度环境中均能正常工作的要求。

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Taking into account the Auger effect, the output-enhancement coatings applied to the facets of the semiconductor lasers have been investigated using a set of travelling wave rate equations.

在考虑了俄歇效应的情况下，用行波速率方程组研究了半导体激光器的输出功率与端面反射率的关系。

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Based in Washington state, Terrapower is working on a design for what is known as a travelling wave reactor.

BBC: China and Bill Gates discuss nuclear reactor plan

Moreover, in fields like solar cells, travelling-wave tubes and read-out integrated circuits, there is either only one domestic supplier or a financially weak supplier.

ECONOMIST: Space technology