closed combinatorial manifold

例句：

1. 1. In the study ofdifferential equations, closed combinatorialmanifolds play a crucial rolein modeling complex systems.
   在研究微分方程时，封闭的组合拓扑流形在建模复杂系统方面起着至关重要的作用。
2. 2. The research on closed combinatorial manifolds has led tosignificant advances in computational geometry andtopology.
   关于封闭组合拓扑流形的研究已经导致计算几何和拓扑领域取得了显著的进步。
3. 3. The closedcombinatorial manifold is a fundamental conceptin the study of dynamical systems, providing a framework for understanding the behaviorof complex systems.
   封闭组合拓扑流形是研究动力系统的基本概念，为理解复杂系统的行为的提供了一个框架。