东风-21能在高空盘旋?
所有跟帖:
• Possible to slow down -csw20020101- ♂ (78 bytes) () 10/29/2012 postreply 23:13:34
• Balloon or Parachute, at the altitude of 100-200 km ? -TBz- ♂ (0 bytes) () 10/29/2012 postreply 23:39:30
• Absolutely - Mylar balloon -csw20020101- ♂ (488 bytes) () 10/30/2012 postreply 00:25:35