在测量工作中，常需要进行平面坐标系之间的转换计算工作。
We often have to finish the work of transformation between Rectangular Plane Coordinate Systems.
因此，对于非正交坐标系测量系统的误差研究变得非常有意义。
As a result the research on the system 's error is of great meaning.
这些点以当前模型的坐标系来测量。
The points are measured in the coordinate system of the active model.
这些点以当前模型的坐标系来测量。
The points are measured in the coordinate system of the active model.
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