名词短语
中文翻译：差异表达式
同义词：
['difference representation', 'difference representations']
例句：
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1. In this study, we used a difference expression to model the relationship between variables.
在本研究中，我们使用一个差异表达式来建模变量之间的关系。
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2. The difference expression is a powerful tool for analyzing data and identifying patterns.
差异表达式是分析数据和识别模式的强大工具。
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3. The difference expression can be used to calculate the differences between two sets of values.
差异表达式可以用来计算两个值集之间的差值。