名词
中文翻译：关系计算法
同义词：
['relational calculus', 'relational analysis']
例句：
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1. In the studyof economics, the relational calculus is used to analyze the relationships between variables.
在经济学研究中，关系计算法被用来分析变量之间的关系。
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2. The relational calculus is a powerful tool for modeling complex systems.
关系计算法是一种强大的工具，用于建模复杂的系统。
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3.The relational calculus has been widely used in various fields such as finance and engineering.
关系计算法在金融和工程等领域得到了广泛的应用。