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In addition, the USAF continues to fund development work of the Aerojet (formerly Atlantic Research) Variable Flow Ducted Rocket ramjet system as a future propulsion option for an extended range AAM.

此，美国军继续投资于航喷气研究所（原来的大西研究所）的可变喷流管火箭发动机系统，将其作为增导弹的未来推进选项。

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原声例句
经济学人-科技

The objective is to develop fuel for ramjets, a type of engine that operates efficiently only above Mach 3.

目的是为冲压式喷气动机(效率仅高3)开燃。

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工程百科

Remember, it's a ramjet that needs air to gain speed.

记住，这是一种需要空气来加速的冲压喷气动机。

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工程百科

The ramjet being able to take off and land on its own.

冲压喷气动机能够自主起飞和降落。

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