That means I want maybe to look at the projection of this guy onto a horizontal plane.
那就意味着，我可能想看到，这个在水平面上的投影。
Maps (on paper or on the screen) are flat surfaces; they require a transformation from the curved surface of the earth to the flat plane: a map projection.
纸上或屏幕上的地图是平面的；它们需要从地球的曲面向平面进行转换：地图投影。
The vector projection method is a graphical technique for motion analysis to the plane mechanism.
向量投影法是一种对平面机构进行运动分析的图解方法。
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