Starting with the invention of the bicycle, going on to sports cars, cars with jet engines, rocket-powered cars, attempts to break the sound barrier, and rocket-engine airplanes.
从发明自行车开始，一直到赛车，喷气发动机汽车，火箭动力汽车，尝试突破声障和火箭动力飞机。
This is the important research problem for starting of the jet engine in the sky. But it was researched for starting test of the small turbojet in the sky.
喷气发动机的空中起动是重要的研究课题，而小涡喷发动机的空中起动试验尚需探索。
This is the important research problem for starting of the jet engine in the sky. But it was researched for starting test of the small turbojet in the sky.
喷气发动机的空中起动是重要的研究课题，而小涡喷发动机的空中起动试验尚需探索。
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