Although the Martian atmosphere is very rare,a parachute is an important decelerator in the entry,descent and landing system for Mars exploration mission.

 
  • 尽管火星表面大气非常稀薄,但降落伞仍是火星探测着陆系统中一种重要的减速装置。
今日热词
目录 附录 查词历史