A few of methods of evaluating straightness error are researched. Minimum zone method tally with minimum condition, so it is ruling basis of evaluating straightness error.
研究了几种直线度误差评定方法，其中最小区域法符合最小条件，应作为直线度误差评定结果的仲裁依据。
According to minimum zone condition, mathematical model of spatial straightness together with the optimal objective function is set up.
根据最小区域条件，建立了空间直线的数学模型以及优化目标函数。
According to minimum zone condition, mathematical model of spatial straightness together with the optimal objective function is set up.
根据最小区域条件，建立了空间直线的数学模型以及优化目标函数。
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