gravity assist

英 美
  • 重力助推
  • assist vt.帮助;协助vi.帮助;出席n.帮助;协助;助攻;协助的器械
  • gravity n.重力;庄重;严重;严肃
名词 gravity-assist:
  1. (spaceflight) a trajectory that passes close to a planetary body in order to gain energy from its gravitational field