Home/diphenylacetylenediphenylacetylene/dahy-fen-l-uh-set-l-een, -feen-/US // daɪˈfɛn l əˈsɛt lˌin, -ˈfin- //二苯乙炔,二苯基乙炔,二苯乙稀,二苯乙醚Definitionsn.名词 noun1 Chemistry.: tolan. Level 5Browse all words →