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North American Datum

北美基准

... 北美海盆 North American Basin 北美基准 North American Datum 北美板块 North American Plate ...

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地球科学

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abstract: The North American Datum is the datum now used to define the geodetic network in North America. In cartography and land-use two North American Datums are in use: the North American Datum of 1927 (NAD27) and the North American Datum of 1983 (NAD83).

以上来源于: WordNet

Often, it is something global like WGS-84 (World Geodetic System 1984, used by all GPS devices), or a regional datum like NAD-83 (North American Datum 1983).

它常常是全球大地基准点（比如 WGS-84，即 World Geodetic System 1984，由所有 GPS 设备使用），或地区性大地基准点（比如 NAD-83，即 North American Datum 1983）。

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