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          第44颗北斗导航卫星发射成功 ,长三甲系列火箭完成百次发射
          2020-04-04 13:39:01

          http://5b0988e595225.cdn.sohucs.com/images/20190421/9dd171ce3a0649c6811ca11681777993.jpeg

          (作者:船用仪器仪表)