[航]?火箭助推器
... 火箭助推滑翔 boost glide 火箭助推滑翔飞行器 boost glide vehicle 火箭助推器 rocket assist ...
?火箭助推
... 化学燃料运载火箭 chemical booster 火箭助推 rocket assist; rocket boosting 火箭助推弹 rocket-assisted projectile ...
火箭助推器起飞
火箭助飞声诱饵
火箭助推起飞
The gravity assist would allow a safe return to Earth even if the spacecraft's main rocket engine failed, Professor Longuski said.
BBC: Manned flight to Mars in 2014?
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