時頻譜

时频谱
shípínpǔ

spectrogram

Wiktionary

Entry Composition

=1 時 Shí surname Shi
=1 時 shí
  1. o'clock
  2. time
  3. when
  4. hour
  5. season
  6. period
2 頻譜 pínpǔ
  1. frequency spectrum
  2. spectrum
  3. spectrogram