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20世纪60年代,人类开启了从空间进行对地观测的新时代。时至今日,人类的对地观测活动已进入将地球作为一个整体进行一体化、综合观测的新阶段,建设空间、航空、地面观
In the 1960s, mankind opened a new era of earth observation from space. Today, human observation activities on the earth have entered into a new phase of integrating the Earth as a whole and comprehensive observation, building space, aviation and surface view