relation of equivalence

例句：

1. 1.In the study of economics, theconcept of equilibrium is closelyrelated to the theory of relations ofequivalence.
   在经济学研究中，平衡概念与等价关系理论密切相关。
2. 2. Theresearchers found that the relationship between the twovariables was closely related to the theory ofrelations of equivalence.
   研究人员发现这两个变量之间的关系与等价关系理论密切相关。
3. 3. The researcher proposed a new methodto analyze the relationship between the two variablesbased on the theory of relations ofequivalence.
   研究人员根据等价关系理论提出了一种新的分析两个变量之间关系的方法。