infrasonic.
/in-fruh-son-ik/US // ˌɪn frəˈsɒn ɪk //
次声波,次谐波,次元,次级方程式
Definitions
adj.adjective · 形容词
- 1.
- ›noting or pertaining to a sound wave with a frequency below the audio-frequency range.
Examples
Such low frequencies, below 20 Hertz, are known as infrasonic notes.
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