infra-accoustic frequency

基本解释亚声频率

网络释义

1)infra-accoustic frequency,亚声频率2)sub-audio frequency,亚声频3)sub-audible,亚声频的4)infrasonic frequency,亚声频,亚音频5)subsonic frequency,亚音频率6)voice frequency,口声频率<声>

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