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简要论述了平面直角坐标系中点所代表的意义及应用,简单地说明了在平面直角坐标系中坐标的基本含义及平面坐标点即长度的基本思想。
This paper briefly discusses the significance and application of the midpoint of the plane rectangular coordinate system, and simply explains the basic idea of the coordinate in the plane rectangular coordinate system and the basic idea of the plane coordinate point length.