energy density of sound

• 声的能量密度

energy density of sound的用法和样例：

例句

1. But to produce the observed acceleration of the universe, the constant's density would have to be twice that of matter.
   但若想造成现今观测到的加速膨胀，则这个宇宙常数的能量密度须为物质密度的两倍。
2. The energy density of space during the inflationary period fluctuated because of the intrinsically statistical quantum laws that govern nature over subatomic distances.
   由于支配次原子范围物理之量子定律的统计特性，使得空间的能量密度在暴胀阶段不停地起伏。