相关的振幅和压力以波速 C 沿单一方向传播（例如不发生反射）的波。行波将能量传递给负载。
另请参阅驻波。
A wave in which the associated amplitude and pressure move in a single direction (e.g., without reflections) at the wave speed C. A traveling wave delivers energy to a load.
Also see standing wave.