To view this page ensure that Adobe Flash Player version 10.2.0 or greater is installed.
Either scripts and active content are not permitted to run or Adobe Flash Player version 10.2.0 or greater is not installed.
姓名: 单位: 联系方式:
地球是我们的家乡,为了更好地监测它的变化,人们发射了各种各样不同用途的人造卫星,有了这些人造卫星,我们就可以对自然灾害进行预报和防卫了。