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國家大地參考系統(tǒng)(CGCS2000)定義
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        參考系原點位于包括海洋和大氣在內(nèi)的整個地球的質(zhì)量中心。Z軸從原點指向IERS參考極(IRP)方向,X軸從原點指向IERS參考子午面(IRM)與赤道的交點,Y軸與X軸和Z軸構成右手坐標系,CGCS2000的原點也用作參考橢球(稱CGCS2000參考橢球)的幾何中心    （共 161 字）     [閱讀本文] >>

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