这种金属高达6,920华氏度的燃点，释放高温度的气体推进火箭前进。
The metal's high ignition temperature of more than 6,920 degrees Fahrenheit forces exhaust gases out at high velocity to propel rockets upward.
调查显示，挑战者号发射当日低温，导致火箭推进器上橡胶O行环密封圈失效，进而引起爆炸性气体泄露。
Theinvestigation showed that low temperatures on the day of the launch caused arubber “O-ring” seal on one of the rocket boosters to fail, which led to a leakof explosive gases.
火箭污水处理系统。这个由斯坦福大学研究设计的以氧化氮为动力的火箭推进器，也可用于污水处理工厂以减少温室气体排放。
Rocket sewage This nitrous oxide-powered rocket thruster designed at Stanford can also be used in a sewage treatment plant to reduce greenhouse gas emissions.
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