spherical reduction factor

例句：

1. 1. The sphere's radius is the distance from the center to the surface of the sphere.
   球体的半径是从中心到球面的距离。
2. 2. The spherical reduction factor is a measure of how much the volume of a sphere decreasesas it gets smaller.
   球体减小系数是一个衡量球体体积随着其变小而减少的程度的度量。
3. 3. In physics, the spherical reduction factor is used to calculate the volume of a sphere when its radius is given.
   在物理学中，球体减小系数被用来计算当给定球体的半径时球的体积。