reciprocal theorems

例句：

1. 1. The study of reciprocal theorems is crucial for understanding the behavior of complex systems.
   研究互惠定理对于理解复杂系统的行为至关重要。
2. 2.In economics, reciprocal theorems are used to model the interactions between buyers and sellers.
   在经济学中，互惠定理用于模拟买家和卖家之间的相互作用。
3. 3. The researchers found that the reciprocal theorems held true in their experiments, which greatly enhanced their confidence in their findings.
   研究人员发现他们的实验中的互惠定理成立，这大大增强了他们对结果的信心。