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Meanings of дб днем in русском
We have no meanings for "дб днем" in our records yet.
Usage of дб днем in русском
1
Для первого норма -до 75 дБ днем (с 7:00 до 23:00) и 65 дБ ночь, для второго - 55и 45 дБ соответственно.