One of the areas is above the true line, and the other is below. So the optimum points which are in ac-cord with minimum condition can be obtained accurately.
该方法是通过某一理想直线将被测实际线分成上、下两部分，即可精确找出符合最小条件的三个最优点。
One of the areas is above the true line, and the other is below. So the optimum points which are in ac-cord with minimum condition can be obtained accurately.
该方法是通过某一理想直线将被测实际线分成上、下两部分，即可精确找出符合最小条件的三个最优点。
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