homocentric sphere

例句：

1. 1. The scientists used a homocentric spherical to study the behavior of matter.
   科学家们使用一个同心球体来研究物质的行为。
2. 2. The planet is located at a concentric sphere around the sun.
   这个行星位于太阳周围的同心球面上。
3. 3. The scientist found that the material had a homocentric spherical structure.
   科学家发现这种材料具有同心球体结构。