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天问1号成功切入火星轨道，它成功的秘诀是啥？
刚刚得到新华社的报道，我们国家的天问一号已经成功的切入到火星轨道，发动机点火只用时15分钟，时间就完成了历史性的任务，所以取得了开门红，那么天问一号成功的秘诀是？
焦维新教授59/654
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