From English-日本語 (にほんご) FreeDict+WikDict dictionary ver. 2022.11.18: travelling wave /tɹˈavəlɪŋ wˈeɪv/ <n> 進行波 wave that is not bounded by a given space, but can propagate freely
travelling wave /tɹˈavəlɪŋ wˈeɪv/ <n> 進行波 wave that is not bounded by a given space, but can propagate freely
