In the process of drawing isogram the coordinates-origin method is used to control the cumulative errors of plotter and decrease them to the least.
为了控制绘图仪的累积误差，在绘制过程中，采用了坐标原点法，使累积误差减至最低限度。
In the process of drawing isogram the coordinates-origin method is used to control the cumulative errors of plotter and decrease them to the least.
为了控制绘图仪的累积误差，在绘制过程中，采用了坐标原点法，使累积误差减至最低限度。
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