When each kind of vocal organ adjustment, can cause the sound production similarly the spectrograph has the corresponding change.
而各种发声器官的调整，同样会使发声时的频谱图产生相应的变化。
When each kind of vocal organ adjustment, can cause the sound production similarly the spectrograph has the corresponding change.
而各种发声器官的调整，同样会使发声时的频谱图产生相应的变化。
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