它增加了每一单位面积上厕所间的使用率。
换句话说,无论人离声源多远,在每一单位面积内都有一定数量的能量传到人耳。
In other words, the amount of energy per unit of area contacts a person's ear regardless of how far she or he is away from the source.
缩写p【物理学】压力;压强:统一作用于物体表面的力量,用每一单位面积上的压力计量。
Abbr. PPhysics force applied uniformly over a surface, measured as force per unit of area.
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