名词
中文翻译：最小二乘误差近似
同义词：
['least-squares approximation', 'least-squares estimate']
例句：
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1. The model's predictions are based on a least squares approximation of the data.
该模型的预测是基于对数据的最小二乘近似。
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2. The least squares method is used to find the best fit for the data.
最小二乘法用于找到数据的最佳拟合。
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3. The least squares approximation is often used in engineering to calculate the dimensions of structures.
在工程中，最小二乘近似常用于计算结构的尺寸。