动态改变大地水准面差距与地球半径的比值，改善了地球形状的三维表达效果；
Dynamic changing the scale of geoid undulations and the radius of the earth, the video mode of the earth figure is improved.
动态改变大地水准面差距与地球半径的比值，改善了地球形状的三维表达效果；
Dynamic changing the scale of geoid undulations and the radius of the earth, the video mode of the earth figure is improved.
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