Y coordinates: The Y coordinate is a point's vertical distance from the origin.
Y坐标：Y坐标是某一个点距离原点的纵向距离。
Once again, this is specified using an (x,y) coordinate pair.
同样，这个位置也要用一对 (x,y)坐标来指定。
The drift in average position is very obvious in the Y-coordinate.
极移的线性漂移速率在Y分量上比较明显。
The drift in average position is very obvious in the Y-coordinate.
极移的线性漂移速率在Y分量上比较明显。
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