sound energy density

例句：

1. 1. The soundenergy density of the air is a keyfactor in determining how loud a sound canbe heard.
   空气的声能密度是决定声音能否被听到的关键因素。
2. 2. Inacoustics, sound energy density is measuredin decibels (dB).
   在声学中，声能密度以分贝为单位进行测量。
3. 3. Thesound energy density of theocean waves is much higher thanthat of airborne sound.
   海洋波浪的声能密度远高于空气中的声音。