These determine the threshold of hearing.
这些只是决定听觉的开始。
Normal hearing people's hearing threshold value under different background noises had significant difference.
环境中，健听人的听阈值具有显著性差异。
Normal hearing people's hearing threshold value under different background noises had significant difference.
环境中，健听人的听阈值具有显著性差异。
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