名词
中文翻译：差异近似值
同义词：
['difference approximation', 'difference estimation', 'difference approximation method']
例句：
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1. The engineerused a difference approximation to estimate the time it would take for the project to finish.
工程师使用差异近似法来估计完成项目所需的时间。
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2. The difference approximation method is widely used in engineering design.
差异近似法在工程设计中被广泛应用。
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3. The difference approximation method can be used to approximate the value of a function at a given point.
差异近似法可以用来近似函数在某一点的值。