当波从小扰动源向各个方向均匀传播时，其强度的变化与距离的平方成反比。
When a wave travels uniformly in all directions from a small source, the intensity varies inversely as the square of the distance.
力场由一个指向原点的向量场给出，并且此向量场的大小，与其到原点的距离的平方成反比。
That would be given by a vector field that points toward the origin and whose magnitude is inversely proportional to the square of a distance from the origin.
引力大小与两物体间的质量乘积成正比，与距离的平方成反比。
Its proportional to the masses of the two objects Inversely proportion to the square of distance between them.
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