科研之友
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<正>A LM-4B launch vehicle lifted off from the Taiyuan Satellite Launch Center at 11:22 Beijing time on November 3,2019,successfully launching the GF-7satellite,part of a major project of the China High-definition Earth Observation System (CHEOS) into its preset orbit.Three other satellites launched with GF-7 together were developed by the Shanghai Institute of Satellite Enginee ring,
