同时性 /tóngshíxìng/ angolul

pitch simultaneity▼(pitches which occur simultaneously)
noun

simultaneity [simultaneities]▼(the quality or state of being simultaneous)
noun
[UK: ˌsɪml.tə.ˈnɪə.ti] [US: ˌsɪml.tə.ˈnɪə.ti]