Busy street 的聲源級 約80dB（分貝）

來源: 於 2018-11-21 10:04:47 [博客] [舊帖] [給我悄悄話] 本文已被閱讀：次
  • From 80 to 90 dB we are getting closer to the danger zone, but the risks are limited to very long exposures.