Finally, when in orbit round the earth, the calculators calculate exactly when to fire the retro-rocket to effect re-entry . 最后,在围绕地球的轨道运行的时候,计算机会精确地计算出应该在什么时候发射制动火箭以重返大气层。
retro-rocketとは意味:<→RETROROCKET> retro-rocket meaning: /retˈrō-rok-it/ noun A rocket whose function is to slow down, fired in a direction opposite to that in which a body, eg a spacecraft or an artificial satellite, is travelling...