求翻译：如上图所示，通过零件上的两个孔建立坐标系，X方向为孔1和孔2的圆心的连线，XZ平面在零件的内壁上，Y向沿孔1的法向。在此坐标系下测量所提供的各点坐标。是什么意思？

As shown above, through the coordinates of the two parts Kongjian Li, x direction as the hole 1 and the hole 2 of the center connection, the XZ plane in the inner wall of the parts, y along the hole Method 1 to. Measured in this coordinate system are provided on the coordinates of each point.

As shown in the figure above, through the parts of the two holes on a coordinate system, with the holes X Direction 1 and 2 of the holes of the Circle line, XZ flat in parts on the inside wall, Y along to the hole 1. In this coordinate system for the measurement of the coordinates of points.

If on the chart shows, through components on two hole establishment coordinate system, X direction for hole 1 and hole 2 center of circle segments, XZ plane on components endophragm, Y to along hole 1 normal.Surveys each coordinates under this coordinate system which provides.

As shown in the previous figure, established through the two holes on a part coordinate system, x for hole 1 and hole 2 of the Circle line, in the XZ plane in the part of the wall, y along the normal to the hole 1. Provides a coordinate system measuring the provided coordinates of the points.

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