irreducible cluster integral

例句：

1. 1. In quantum mechanics, an irreducible cluster integral is a fundamental concept that describes the behavior of particles in a system.
   在量子力学中，不可约分的群积分是一个基本概念，它描述了系统中粒子的行为。
2. 2. The theory of irreducible cluster integrals has been applied to many areas of science and engineering.
   不可约分的群积分理论已被应用于科学和工程的许多领域。
3. 3. The study of irreducible cluster integrals is crucial for understanding the structure and dynamics of complex systems.
   研究不可约分的群积分对于理解复杂系统的结构与动态至关重要。