英语词汇PNdB是什么意思，PNdB的用法、释义、翻译、读音、例句、短语词组-英汉汉英翻译词典

单词	PNdB
释义	PNdB　 abbr.perceived noise decibel(s) 感觉(或可闻)噪声分贝
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