Perched on the shoulders of the booster is the second stage, the most powerful hydrogen-fueled rocket ever built .
放在助飞火箭上的是第二节，那是迄今制造的最强大氢燃料火箭。
2
On this basis it makes some study on the combustion process of hydrogen-fueled IC engine by changing the ignition advance angle and equivalence ratio of the model.
An experimental investigation on effects of oscillating shock generated by liquid jet on reinforcement of hydrogen-fueled supersonic combustion in Mach 2 airstream was completed.