GRACE Electron Density of the K-Band Ranging System (KBR)
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The GRACE (Gravity Recovery and Climate Experiment) satellites, which comprises two spacecraft, GRACE-A and GRACE-B, were launched on 17 March 2002 into a near-circular, polar...
重力恢复与气候实验（Gravity Recovery and Climate Experiment，GRACE）卫星由GRACE-A与GRACE-B两颗航天器组成，于2002年3月17日被发射进入近圆形极轨……
