earth-centered earth-fixed coordinate system ecef
... 漠不关心地 nonchalantly; unconcernedly 地心地球固连 earth-centered earth-fixed coordinate system ecef 以地球为中心地 geocentrically ...
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earth-centered earth-fixed coordinate system ecef
地心定地坐标系等
以上为机器翻译结果，长、整句建议使用 人工翻译 。