asphericity coefficient

例句：

1. 1.The asphericity coefficient is a measure of the sphericity of a planet's surface.
   球体系数是衡量行星表面球度的一个指标。
2. 2.The asphericity coefficient is used to calculate the volume of a planet's interior.
   球体系数被用来计算行星内部体积。
3. 3. The asphericity coefficient is also used to study the distribution of matter in the solar system.
   球体系数也被用于研究太阳系物质的分布情况。