ɹˈɛɡjʊlɚɹˌaɪzd lˈɔŋwˈeɪv ᵻkwˈeɪʒən, ɐ mˈɑːdəl fɔːɹ sˈɜːfɪs ɡɹˈævᵻɾi wˈeɪvz wˌɪtʃ ɑːɹ lˈɔŋ ænd pɹˈɑːpɐɡˌeɪt jˌuːnɪdᵻɹˈɛkʃənəli
Regularized long-wave equation, a model for surface gravity waves which are long and propagate unidirectionally