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Terms for subject United Nations containing datum | all forms | exact matches only
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chart datum海图基准点
chart datum transfer海图基准点转换
datum transformation parameters基准变化参数
geocentric datum地心基准
geocentric datums地心数据
geodetic datum大地基准点
geodetic datum大地测量数据
horizontal datum基准面
horizontal datum水平基准线
tidal datum transfer潮汐基准面转换
vertical datum高程基准
vertical datum基准面
vertical datum高程控制基准