bindexbutanone./byoot-n-ohn/US // ˈbyut nˌoʊn //UK // (ˈbjuːtəˌnəʊn) //丁酮,丁烷酮,丁酮类,正丁酮Definitionsn.noun · 名词1. Chemistry.›methyl ethyl ketone. Level 4More words in b →