rational homology sphere

例句：

1. 1.The mathematical model of the rational homology sphere is a key to solving complex problems in physics and engineering.
   数学上，理性同伦球体的模型是解决物理学和工程学复杂问题的关键。
2. 2.The research on the rational homology sphere has provided new insights into the structure of matter.
   对理性同伦球体的研究为物质结构提供了新的见解。
3. 3.In the study of quantum mechanics, the rational homology sphere plays an important role in understanding the behavior of particles at very small scales.
   在量子力学研究中，理性同伦球体在理解粒子在非常小尺度的行为中起着重要作用。