Besides, error curve and error ellipse are analyzed.So, it is shown that error ellipse is inutility, and error curve is useful and effective.
对中桩的误差曲和误差椭圆的分析认为,误差椭圆无际意义,误差曲而有效。
Besides, error curve and error ellipse are analyzed.So, it is shown that error ellipse is inutility, and error curve is useful and effective.
对中桩的误差曲和误差椭圆的分析认为,误差椭圆无际意义,误差曲而有效。
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